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 the speed which is close to but less than speed of light
D) the electrons are stagnant
Correct Answer: B
Solution :
The electrical signal is carried by electromagnetic waves. Electromagnetic waves travel with the speed of light. Hence, after switching on, an electrical appliance responds almost immediately.
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