8.State Ohm's law. Write the necessary conditions for its validity. How is this law verified experimentally?
What will be the nature of graph between potential difference and current for a conductor? Name the
physical quantity that can be obtained from this graph.
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Ohm's law states that the current flowing through a matallic wire is directly proportional to the potential difference across its end, provided the temprature and other physical conditions remain unchanged.
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