What is OHM'S law???

Answers (1)

The current through a metallic wire is directly proportional to the potential difference applied across the wire, provided its temperature remains the same. 

That is V\propto I  where V is the potential difference and I is the current flowing

or

V=IR where R is the resistance. The unit of resistance is ohm. That is the graph between I and V will be a straight line and the slope of the graph gives the value of resistance.

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