A circuit consists of a battery and a light bulb. At first, the circuit is disco

Question

A circuit consists of a battery and a light bulb. At first, the circuit is disconnected. Then, the circuit is connected, and the light bulb lights. After the light bulb has been lit for a few moments, how has the net charge residing on the circuit elements changed?

(A)   The net charge has become more positive.

(B)   The net charge has become more negative.

(C)   The net charge has not changed.

(D)   Whether the net charge becomes more positive or more negative depends on the initial net charge residing on the circuit elements before the bulb was lit.

Explanation / Answer

Ans: C The net charge has not changed.

A circuit allows chrage to flow and changes the electric energy of charges in the wire., However net charge in the wire is conserved.

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