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Write the formula of resistivity
The graph between V and I for a conductor is a straight line passing through the origin.
- Which law is illustrated by such a graph?
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A resistance of 40 ohms and one of 60 ohms are arranged in series across 220 volt supply. Find the heat in joules produced by this combination of resistances in half a minute.
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Assertion: The statement of Ohm’s law is K = IR.
Reason: V = IR is the equation which defines resistance.
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The heat produced by a 100 w heater in 2 minute is equal to
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