If current I flow through a conductor wire, then the potential difference between the ends of the conductor is,

V ∝ I

or V = RI

Where, R is constant, called resistance of the conductor wire.

This is called Ohm’s law.

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# Ohm’s law

If current I flow through a conductor wire, then the potential difference between the ends of the conductor is,

V ∝ I

or V = RI

Where, R is constant, called resistance of the conductor wire.

This is called Ohm’s law.