Difference between revisions of "Electrical Resistance"
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===Equation=== | ===Equation=== | ||
| − | : <math>Resistance = tfrac{Potential Difference}{Current}</math> | + | :<math>Speed = {\tfrac{distance}{time}} </math> |
| + | : <math>Resistance = \tfrac{Potential Difference}{Current}</math> | ||
Revision as of 17:42, 25 October 2018
Key Stage 3
Meaning
Resistance is a description of how difficult it is to increase the current through a conductor when increasing the potential difference.
About Resistance
- 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.
Equation
\[Speed = {\tfrac{distance}{time}} \] \[Resistance = \tfrac{Potential Difference}{Current}\]