The lamps in a string of decorative lights are connected in parallel across a constant-voltage power source.What happens if one lamp burns out? (Assume negligible resistance in the wires leading to the lamps. )
A)The brightness of the lamps will not change appreciably.
B)The other lamps get brighter equally.
C)The other lamps get brighter,but some get brighter than others.
D)The other lamps get dimmer equally.
E)The other lamps get dimmer,but some get dimmer than others.

Question

Quizplus · Accepted Answer

In a parallel circuit, each lamp operates independently of the others. If one lamp burns out, the voltage across the remaining lamps does not change, so their brightness remains the same.

The Lamps in a String of Decorative Lights Are Connected