2.2.3 Resistance Flashcards
1
Q
State Ohm’s Law.
A
Current is proportional to PD at constant temp.
2
Q
Define Internal Resistance.
A
Resistance that is intrinsic with a source of EMF.
3
Q
Explain Internal Resistance.
A
When electricity flows in a circuit, internal resistance of the cell itself resists the flow of current and so thermal heat energy is wasted in the cell itself.
4
Q
Define the Ohm.
A
When a PD of 1V drops across a component when a current of 1A is present.
