Question

A bulb cannot be used in place of a resistor to verify Ohm’s law. Justify this

statement with reason.​

Answer 1

Explanation:

Bulb is a non-ohmic resistor i.e, it does not obey ohm's law.

For Ohm's Law to be proved V/I = R. That is R should remain constant even when V and I change for a particular conductor. But in a bulb as the current varies the temperature of the filament of the bulb also changes resulting in change in the Resistance offered by the bulb. Thus, Ohm's law cannot be proved by using a Bulb in place of a Resistor.

Answer 2

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