Q. When an electrical appliance is switched on, it responds almost immediately, because
A) The electrons in the connecting wires move with the speed of light
B) The electrical signal is carried by electromagnetic waves moving with the speed of light
C) The electrons move with speed which is close to but less than speed of light
D) The electron are stagnant
Explanation
(b) It is the electric field that is set up which moves with the velocity of light in that medium
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.