A rocking chair has damaged the cord of your desk lamp. One of the two wires in the cord is completely cut in half and cannot carry any current. However, the other wire still connects the lamp to the electric socket. If you turn on the lamp,
A) the normal amount of current will flow through both wires and the lamp will glow at its normal brightness.
B) the normal amount of current will flow through the one remaining wire and the lamp will glow at half its normal brightness.
C) no current will flow through either wire and the lamp will remain dark.
D) half the normal amount of current will flow through the one remaining wire and the lamp will glow at a quarter of its normal brightness.

Question

Quizplus · Accepted Answer

For a lamp to work, current must flow in a complete circuit from the power source, through the lamp, and back to the power source. If one of the wires is completely cut, the circuit is open, and no current can flow, so the lamp will not light up.

A Rocking Chair Has Damaged the Cord of Your Desk