List of top Physics Questions on Ohm's Law

The graph between voltage \( V \) of a conductor and current \( I \) is a straight line, which makes an angle \( \theta \) with the y-axis (which represents \( I \)). The resistance of the conductor will be
Which of the following represents resistance, R?
\( \rho = \text{resistivity}, l = \text{length of material}, A = \text{cross-sectional area} \)
Power of electric circuit is
100 joules of heat is produced each second in a 4 ohm resistance. Potential difference across the resistor is:
The current in a conductor is directly proportional to the potential difference between its ends at constant temperature. This is known as