Q. Find the true statements
A) Ohm’s 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
Explanation
(c) The temperature coefficient of the carbon is negative so the resistance of carbon decreases with the increase of temperature.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.