Question

Ohm's Law states that for a metallic conductor, the current flowing through it is directly proportional to the potential difference across its ends, provided that:

Options

• The current is kept constant throughout the experiment

• The conductor is connected to an alternating current source

• The temperature and other physical conditions of the conductor remain constant

• The resistance of the conductor increases with voltage

Answer 1

Ohm's Law is valid only when the temperature and other physical conditions of the conductor remain unchanged. Under these conditions, increasing the voltage increases the current in the same ratio, giving a direct proportionality between V and I.