The current in a conductor and the potential difference across its ends
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The current in a conductor is denoted by I and the potential difference across its ends is denoted by V.
Mathematically,
V = IR and I =
where, V = potential difference across the ends of the conductor
I = current in the conductor
R = resistance of the conductor
R is always constant for a conductor of a given material.
Current in the conductor is measured by an Ammeter.
Potential difference across a conductor is measured by a Voltmeter.
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