Question

Find the true statement.

• A. Ohms law is applicable to all conductors of electricity.
• B. In an electrolyte solution, the electric current is mainly due to the movement of electrons.
• C. The resistance of an incandescent lamp is lesser when the lamp is switched on.
• D. Specific resistance of a wire depends upon its dimension.
• E. The resistance of carbon decreases with the increase of temperature.

Answer 1

Answer: (E)

The temperature coefficient of the carbon is negative so the resistance of carbon decreases with the increase of temperatures.