alleryOhm's law is valid under the condition that the
Aconductor length keeps changing
Btemperature of the conductor remains constant
Ccurrent is always zero
Dbattery has infinite emf
Answer & Solution
Correct answer: B. temperature of the conductor remains constant
The statement of Ohm's law includes the condition of constant temperature.
If temperature changes, the resistance may change and the proportionality between $V$ and $I$ may no longer hold.
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