Resistor - Revision history

Ellen References at 18:16, 18 December 2019

2019-12-18T18:16:02Z

Ellen References at 15:49, 28 November 2019

2019-11-28T15:49:11Z

Ellen References at 17:09, 12 November 2019

2019-11-12T17:09:22Z

NRJC at 10:21, 8 April 2019

2019-04-08T10:21:23Z

NRJC: /* Resistors in Parallel */

2019-02-28T18:45:57Z

‎Resistors in Parallel

NRJC: /* Obtaining the IV Graph */

2019-02-28T18:14:13Z

‎Obtaining the IV Graph

NRJC: /* IV Graph */

2019-02-28T18:14:00Z

‎IV Graph

NRJC at 14:53, 28 February 2019

2019-02-28T14:53:59Z

NRJC at 14:42, 28 February 2019

2019-02-28T14:42:13Z

NRJC: /* Resistors in Parallel */

2019-02-27T15:21:41Z

‎Resistors in Parallel

← Older revision		Revision as of 18:16, 18 December 2019
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	:[https://www.amazon.co.uk/gp/product/1292120223/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1292120223&linkCode=as2&tag=nrjc-21&linkId=068ecf40278c32406a7f1c6e66751417 ''Resistors; parallel circuits, page 147, GCSE Physics, Pearson Edexcel '']		:[https://www.amazon.co.uk/gp/product/1292120223/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1292120223&linkCode=as2&tag=nrjc-21&linkId=068ecf40278c32406a7f1c6e66751417 ''Resistors; parallel circuits, page 147, GCSE Physics, Pearson Edexcel '']
	:[https://www.amazon.co.uk/gp/product/1292120223/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1292120223&linkCode=as2&tag=nrjc-21&linkId=068ecf40278c32406a7f1c6e66751417 ''Resistors; series circuits, pages 146-147, GCSE Physics, Pearson Edexcel '']		:[https://www.amazon.co.uk/gp/product/1292120223/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1292120223&linkCode=as2&tag=nrjc-21&linkId=068ecf40278c32406a7f1c6e66751417 ''Resistors; series circuits, pages 146-147, GCSE Physics, Pearson Edexcel '']
		+
		+	====OCR====
		+	:[https://www.amazon.co.uk/gp/product/0198359837/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0198359837&linkCode=as2&tag=nrjc-21&linkId=3c4229e8b023b2b60768e7ea2307cc6f ''Resistors, pages 104, 106, 110, 113, Gateway GCSE Physics, Oxford, OCR '']
		+	:[https://www.amazon.co.uk/gp/product/1782945695/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945695&linkCode=as2&tag=nrjc-21&linkId=ceafcc80bcad6b6754ee97a0c7ceea53 ''Resistors, pages 176, 178, 179, Gateway GCSE Combined Science; The Revision Guide, CGP, OCR '']
		+	:[https://www.amazon.co.uk/gp/product/1782945687/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945687&linkCode=as2&tag=nrjc-21&linkId=9a598e52189317a20311d7a632747bc9 ''Resistors, pages 45-47, Gateway GCSE Physics; The Revision Guide, CGP, OCR '']

← Older revision		Revision as of 15:49, 28 November 2019
Line 128:		Line 128:
	:[https://www.amazon.co.uk/gp/product/1782946403/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782946403&linkCode=as2&tag=nrjc-21&linkId=32a0abb60dff015b15b50e9b1d7b4644 ''Resistors; variable resistors, pages 60, 65, GCSE Combined Science Trilogy; Physics, CGP, AQA '']		:[https://www.amazon.co.uk/gp/product/1782946403/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782946403&linkCode=as2&tag=nrjc-21&linkId=32a0abb60dff015b15b50e9b1d7b4644 ''Resistors; variable resistors, pages 60, 65, GCSE Combined Science Trilogy; Physics, CGP, AQA '']
	:[https://www.amazon.co.uk/gp/product/1782945970/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945970&linkCode=as2&tag=nrjc-21&linkId=a120d24dcc7cc7a58192069a3aafc1d2 ''Resistors; variable resistors, pages 62, 67, GCSE Physics; The Complete 9-1 Course for AQA, CGP, AQA '']		:[https://www.amazon.co.uk/gp/product/1782945970/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945970&linkCode=as2&tag=nrjc-21&linkId=a120d24dcc7cc7a58192069a3aafc1d2 ''Resistors; variable resistors, pages 62, 67, GCSE Physics; The Complete 9-1 Course for AQA, CGP, AQA '']
		+
		+	====Edexcel====
		+
		+	:[https://www.amazon.co.uk/gp/product/1782948163/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782948163&linkCode=as2&tag=nrjc-21&linkId=0fdbfd5dd397d6e24a9dfb250f08587f ''Resistors (fixed), page 228, GCSE Physics, CGP, Edexcel '']
		+	:[https://www.amazon.co.uk/gp/product/1292120223/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1292120223&linkCode=as2&tag=nrjc-21&linkId=068ecf40278c32406a7f1c6e66751417 ''Resistors; parallel circuits, page 147, GCSE Physics, Pearson Edexcel '']
		+	:[https://www.amazon.co.uk/gp/product/1292120223/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1292120223&linkCode=as2&tag=nrjc-21&linkId=068ecf40278c32406a7f1c6e66751417 ''Resistors; series circuits, pages 146-147, GCSE Physics, Pearson Edexcel '']

← Older revision		Revision as of 17:09, 12 November 2019
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	#Reverse the connections on the [[battery]] and repeat steps 4 and 5 to find the I-V relationship for negative [[Potential Difference\|potential difference]] and [[Electrical Current\|current]].		#Reverse the connections on the [[battery]] and repeat steps 4 and 5 to find the I-V relationship for negative [[Potential Difference\|potential difference]] and [[Electrical Current\|current]].
	\|}		\|}
		+
		+	===References===
		+	====AQA====
		+
		+	:[https://www.amazon.co.uk/gp/product/0008158770/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0008158770&linkCode=as2&tag=nrjc-21&linkId=ec31595e720e1529e49876c3866fff6e ''Resistor, pages 46-7, 52, GCSE Physics; Student Book, Collins, AQA '']
		+	:[https://www.amazon.co.uk/gp/product/0008158770/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0008158770&linkCode=as2&tag=nrjc-21&linkId=ec31595e720e1529e49876c3866fff6e ''Resistor; non-ohmic, page 59, GCSE Physics; Student Book, Collins, AQA '']
		+	:[https://www.amazon.co.uk/gp/product/0008158770/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0008158770&linkCode=as2&tag=nrjc-21&linkId=ec31595e720e1529e49876c3866fff6e ''Resistors in parallel, pages 55, 63, GCSE Physics; Student Book, Collins, AQA '']
		+	:[https://www.amazon.co.uk/gp/product/0008158770/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0008158770&linkCode=as2&tag=nrjc-21&linkId=ec31595e720e1529e49876c3866fff6e ''Resistors in series, pages 54, 57, 63, GCSE Physics; Student Book, Collins, AQA '']
		+	:[https://www.amazon.co.uk/gp/product/1471851354/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1471851354&linkCode=as2&tag=nrjc-21&linkId=9012a0d354024419214fb3ad5ac44ba0 ''Resistors, pages 293, 295-6, GCSE Combined Science Trilogy 1, Hodder, AQA '']
		+	:[https://www.amazon.co.uk/gp/product/1471851370/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1471851370&linkCode=as2&tag=nrjc-21&linkId=01c69b0ae058f809cf636033e6ba793e ''Resistors, pages 40-1, GCSE Physics, Hodder, AQA '']
		+	:[https://www.amazon.co.uk/gp/product/019835939X/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=019835939X&linkCode=as2&tag=nrjc-21&linkId=57e96876985fc39b1a3d8a3e3dc238b6 ''Resistors, pages 52-53, 55, 58-59, 61, 70, GCSE Physics; Third Edition, Oxford University Press, AQA '']
		+	:[https://www.amazon.co.uk/gp/product/1782946403/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782946403&linkCode=as2&tag=nrjc-21&linkId=32a0abb60dff015b15b50e9b1d7b4644 ''Resistors, pages 60, 66, 77-79, GCSE Combined Science Trilogy; Physics, CGP, AQA '']
		+	:[https://www.amazon.co.uk/gp/product/1782945970/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945970&linkCode=as2&tag=nrjc-21&linkId=a120d24dcc7cc7a58192069a3aafc1d2 ''Resistors, pages 62, 68, 79-81, GCSE Physics; The Complete 9-1 Course for AQA, CGP, AQA '']
		+	:[https://www.amazon.co.uk/gp/product/1471851370/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1471851370&linkCode=as2&tag=nrjc-21&linkId=01c69b0ae058f809cf636033e6ba793e ''Resistors; circuit symbol, page 38, GCSE Physics, Hodder, AQA '']
		+	:[https://www.amazon.co.uk/gp/product/1782946403/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782946403&linkCode=as2&tag=nrjc-21&linkId=32a0abb60dff015b15b50e9b1d7b4644 ''Resistors; I-V characteristics, pages 65, 66, GCSE Combined Science Trilogy; Physics, CGP, AQA '']
		+	:[https://www.amazon.co.uk/gp/product/1782945970/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945970&linkCode=as2&tag=nrjc-21&linkId=a120d24dcc7cc7a58192069a3aafc1d2 ''Resistors; I-V characteristics, pages 67, 68, GCSE Physics; The Complete 9-1 Course for AQA, CGP, AQA '']
		+	:[https://www.amazon.co.uk/gp/product/1782946403/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782946403&linkCode=as2&tag=nrjc-21&linkId=32a0abb60dff015b15b50e9b1d7b4644 ''Resistors; light-dependant resistors (LDRs), pages 60, 80, 81, GCSE Combined Science Trilogy; Physics, CGP, AQA '']
		+	:[https://www.amazon.co.uk/gp/product/1782945970/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945970&linkCode=as2&tag=nrjc-21&linkId=a120d24dcc7cc7a58192069a3aafc1d2 ''Resistors; light-dependant resistors (LDRs), pages 62, 82, 83, GCSE Physics; The Complete 9-1 Course for AQA, CGP, AQA '']
		+	:[https://www.amazon.co.uk/gp/product/1471851354/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1471851354&linkCode=as2&tag=nrjc-21&linkId=9012a0d354024419214fb3ad5ac44ba0 ''Resistors; light-dependent (LDRs), pages 299-300, GCSE Combined Science Trilogy 1, Hodder, AQA '']
		+	:[https://www.amazon.co.uk/gp/product/1471851354/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1471851354&linkCode=as2&tag=nrjc-21&linkId=9012a0d354024419214fb3ad5ac44ba0 ''Resistors; ohmic and non-ohmic, page 298, GCSE Combined Science Trilogy 1, Hodder, AQA '']
		+	:[https://www.amazon.co.uk/gp/product/1471851370/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1471851370&linkCode=as2&tag=nrjc-21&linkId=01c69b0ae058f809cf636033e6ba793e ''Resistors; ohmic and non-ohmic, page 43, GCSE Physics, Hodder, AQA '']
		+	:[https://www.amazon.co.uk/gp/product/1471851354/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1471851354&linkCode=as2&tag=nrjc-21&linkId=9012a0d354024419214fb3ad5ac44ba0 ''Resistors; thermistors, pages 298-9, GCSE Combined Science Trilogy 1, Hodder, AQA '']
		+	:[https://www.amazon.co.uk/gp/product/1782946403/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782946403&linkCode=as2&tag=nrjc-21&linkId=32a0abb60dff015b15b50e9b1d7b4644 ''Resistors; thermistors, pages 60, 80, 81, GCSE Combined Science Trilogy; Physics, CGP, AQA '']
		+	:[https://www.amazon.co.uk/gp/product/1782945970/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945970&linkCode=as2&tag=nrjc-21&linkId=a120d24dcc7cc7a58192069a3aafc1d2 ''Resistors; thermistors, pages 62, 82, 83, GCSE Physics; The Complete 9-1 Course for AQA, CGP, AQA '']
		+	:[https://www.amazon.co.uk/gp/product/1782946403/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782946403&linkCode=as2&tag=nrjc-21&linkId=32a0abb60dff015b15b50e9b1d7b4644 ''Resistors; variable resistors, pages 60, 65, GCSE Combined Science Trilogy; Physics, CGP, AQA '']
		+	:[https://www.amazon.co.uk/gp/product/1782945970/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945970&linkCode=as2&tag=nrjc-21&linkId=a120d24dcc7cc7a58192069a3aafc1d2 ''Resistors; variable resistors, pages 62, 67, GCSE Physics; The Complete 9-1 Course for AQA, CGP, AQA '']

@@ Line 9: / Line 9: @@
 : The greater the [[Electrical Resistance|resistance]] of a [[resistor]] the smaller the [[Electrical Current|current]] will be.
 : The [[Electrical Resistance|resistance]] of a [[resistor]] can be found by attaching an [[ammeter]] in [[Series Circuit|series]] with the [[resistor]] and a [[voltmeter]] in [[Parallel Circuit|parallel]] with the [[resistor]].
-: All [[electrical component|component]]s in a [[circuit]] act as [[resistor]]s, including [[wire]]s. The longer a [[wire]] the more [[Electrical Resistance|resistance]] it will have to a [[Electrical Current|current]].
+: All [[electrical Component|component]]s in a [[circuit]] act as [[resistor]]s, including [[wire]]s. The longer a [[wire]] the more [[Electrical Resistance|resistance]] it will have to a [[Electrical Current|current]].
 {| class="wikitable"
@@ Line 30: / Line 30: @@
 : The greater the [[Electrical Resistance|resistance]] of a [[resistor]] the smaller the [[Electrical Current|current]] will be.
 : The [[Electrical Resistance|resistance]] of a [[resistor]] can be found by attaching an [[ammeter]] in [[Series Circuit|series]] with the [[resistor]] and a [[voltmeter]] in [[Parallel Circuit|parallel]] with the [[resistor]].
-: All [[electrical component|component]]s in a [[circuit]] act as [[resistor]]s, including [[wire]]s. The longer a [[wire]] the more [[Electrical Resistance|resistance]] it will have to a [[Electrical Current|current]].
+: All [[electrical Component|component]]s in a [[circuit]] act as [[resistor]]s, including [[wire]]s. The longer a [[wire]] the more [[Electrical Resistance|resistance]] it will have to a [[Electrical Current|current]].
 ===Resistors in Series===

@@ Line 65: / Line 65: @@
 |-
-| style="height:20px; width:200px; text-align:center;" |Two identical [[resistor]]s in [[Parallel|Parallel circuit]] gives twice the number of paths, so has half the [[Electrical Resistance|resistance]].
+| style="height:20px; width:200px; text-align:center;" |Two identical [[resistor]]s in [[Parallel Circuit|parallel]] gives twice the number of paths, so has half the [[Electrical Resistance|resistance]].
 The [[Electrical Resistance|resistance]] between points A and B is 12Ω.
-| style="height:20px; width:200px; text-align:center;" |Three identical [[resistor]]s in [[Parallel|Parallel circuit]] gives three times the number of paths, so has a third of the [[Electrical Resistance|resistance]].
+| style="height:20px; width:200px; text-align:center;" |Three identical [[resistor]]s in [[Parallel Circuit|parallel]] gives three times the number of paths, so has a third of the [[Electrical Resistance|resistance]].
 The [[Electrical Resistance|resistance]] between points A and B is 8Ω.
-| style="height:20px; width:200px; text-align:center;" |Four identical [[resistor]]s in [[Parallel|Parallel circuit]] gives four times the number of paths, so has a quarter of the [[Electrical Resistance|resistance]].
+| style="height:20px; width:200px; text-align:center;" |Four identical [[resistor]]s in [[Parallel Circuit|parallel]] gives four times the number of paths, so has a quarter of the [[Electrical Resistance|resistance]].
 The [[Electrical Resistance|resistance]] between points A and B is 6Ω.

@@ Line 94: / Line 94: @@
 |-
 |[[File:ResistorIVGraphCircuit.png|center|300px]]
-| style="height:20px; width:300px; text-align:center;" |
+| style="height:20px; width:300px; text-align:left;" |
 #Connect an [[ammeter]] in [[Series Circuit|series]] with the [[resistor]] to measure [[Electrical Current|current]] through the [[resistor]].
 #Connect a [[voltmeter]] in [[Parallel Circuit|parallel]] with the [[resistor]] to measure the [[Potential Difference|potential difference]] across it.

← Older revision		Revision as of 18:14, 28 February 2019
Line 89:		Line 89:
	====Explanation====		====Explanation====
	: [[Resistor]]s obey [[Ohm's Law]] so the "[[Electrical Current\|current]] through a [[Electrical Resistor\|resistor]] at constant [[temperature]] is [[Directly Proportional\|directly proportional]] to the [[Potential Difference\|potential difference]] across the [[resistor]]."		: [[Resistor]]s obey [[Ohm's Law]] so the "[[Electrical Current\|current]] through a [[Electrical Resistor\|resistor]] at constant [[temperature]] is [[Directly Proportional\|directly proportional]] to the [[Potential Difference\|potential difference]] across the [[resistor]]."
		+
		+	====Obtaining the IV Graph====
		+	{\| class="wikitable"
		+	\|-
		+	\|[[File:ResistorIVGraphCircuit.png\|center\|300px]]
		+	\| style="height:20px; width:300px; text-align:center;" \|
		+	#Connect an [[ammeter]] in [[Series Circuit\|series]] with the [[resistor]] to measure [[Electrical Current\|current]] through the [[resistor]].
		+	#Connect a [[voltmeter]] in [[Parallel Circuit\|parallel]] with the [[resistor]] to measure the [[Potential Difference\|potential difference]] across it.
		+	#Use a [[Variable Resistor\|variable resistor]] in [[Series Circuit\|series]] with the [[resistor]] to vary the [[Potential Difference\|potential difference]] across the [[resistor]].
		+	#Start with a [[Potential Difference\|potential difference]] of zero and increase the [[Potential Difference\|potential difference]] by an interval of 0.2V up to 2V.
		+	#Recording the reading on the [[voltmeter]] and [[ammeter]].
		+	#Reverse the connections on the [[battery]] and repeat steps 4 and 5 to find the I-V relationship for negative [[Potential Difference\|potential difference]] and [[Electrical Current\|current]].
		+	\|}

@@ Line 80: / Line 80: @@
 |-
 |[[File:IVGraphResistor.png|center|400px]]
 |}
 ====Description====
-: The [[IV Graph]] for a [[resistor]] shows that
+The [[IV Graph]] for a [[resistor]] shows that:
-: As [[Potential Difference|potential difference]] increases, [[Electrical Current|increases]].
+*As [[Potential Difference|potential difference]] increases, [[Electrical Current|increases]].
-: The relationship between [[Potential Difference|potential difference]] and [[Electrical Current|current]] is [[linear]] (the [[gradient]] is constant).
+*The relationship between [[Potential Difference|potential difference]] and [[Electrical Current|current]] is [[linear]] (the [[gradient]] is constant).
-: The [[Electrical Current|current]] is [[Directly Proportional|directly proportional]] to [[Potential Difference|potential difference]].
+*The [[Electrical Current|current]] is [[Directly Proportional|directly proportional]] to [[Potential Difference|potential difference]].
 ====Explanation====
 : [[Resistor]]s obey [[Ohm's Law]] so the "[[Electrical Current|current]] through a [[Electrical Resistor|resistor]] at constant [[temperature]] is [[Directly Proportional|directly proportional]] to the [[Potential Difference|potential difference]] across the [[resistor]]."

← Older revision		Revision as of 14:42, 28 February 2019
Line 75:		Line 75:
	The [[Electrical Resistance\|resistance]] between points A and B is 6Ω.		The [[Electrical Resistance\|resistance]] between points A and B is 6Ω.
	\|}		\|}
		+
		+	===IV Graph===
		+	{\| class="wikitable"
		+	\|-
		+	\|[[File:IVGraphResistor.png\|center\|400px]]
		+	\|-
		+	\| style="height:20px; width:200px; text-align:center;" \|
		+	\|}
		+	====Description====
		+	: The [[IV Graph]] for a [[resistor]] shows that
		+	: As [[Potential Difference\|potential difference]] increases, [[Electrical Current\|increases]].
		+	: The relationship between [[Potential Difference\|potential difference]] and [[Electrical Current\|current]] is [[linear]] (the [[gradient]] is constant).
		+	: The [[Electrical Current\|current]] is [[Directly Proportional\|directly proportional]] to [[Potential Difference\|potential difference]].
		+
		+	====Explanation====
		+	: [[Resistor]]s obey [[Ohm's Law]] so the "[[Electrical Current\|current]] through a [[Electrical Resistor\|resistor]] at constant [[temperature]] is [[Directly Proportional\|directly proportional]] to the [[Potential Difference\|potential difference]] across the [[resistor]]."

@@ Line 54: / Line 54: @@
 ===Resistors in Parallel===
-''NB: You only need to know what happens with identical [[resistors]] in [[Parallel Circuit|parallel]].''
+''NB: You only need to know what happens with identical [[resistor]]s in [[Parallel Circuit|parallel]].''
 : When identical [[resistor]]s are added in [[Parallel Circuit|parallel]] there are more paths for the [[electricity]] so the [[Electrical Resistance|resistance]] is reduced.