State and explain ohm’s law. - Vidyadip

Question

State and explain ohm’s law.

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Answer

Statement: The current $I$ through a conductor is directly proportional to the potential difference $V$ applied across its two ends provided the physical state of the conductor is unchanged.
Explanation:
According to ohm's law,
$I \propto V$
$\therefore V = IR \text { or } R =\frac{V}{I}$
where, $R$ is proportionality constant and is called the of the conductor.

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