Difference between revisions of "Electrical Resistance"

Revision as of 13:59, 25 October 2018

Resistance is a description of how difficult it is to increase the current through a conductor when changing the potential difference.

The unit of resistance is the Ohm (Ω).

Resistance cannot be directly measured. Resistance must be calculated by dividing the Potential Difference by the Current.

Conductors have a low resistance and insulators have a high resistance.

@@ Line 1: / Line 1: @@
-A description of how difficult it is to [[increase]] the [[Electrical Current|current]] through a [[Electrical Conductor|conductor]] when changing the [[potential difference]].
+==Key Stage 3==
+===Meaning===
+'''Resistance''' is a description of how difficult it is to [[increase]] the [[Electrical Current|current]] through a [[Electrical Conductor|conductor]] when changing the [[potential difference]].
+===About Resistance===
+: The [[SI Unit|unit]] of '''resistance''' is the [[Ohm]] ([[Ω]]).
+: '''Resistance''' cannot be directly [[measure]]d. '''Resistance''' must be calculated by dividing the [[Potential Difference]] by the [[Electrical Current|Current]].
+: [[Electrical Conductor|Conductors]] have a low '''resistance''' and [[Electrical Insulator|insulator]]s have a high '''resistance'''.