A set of decorative lights consists of 100 bulbs, each having the same resistanc

Question

A set of decorative lights consists of 100 bulbs, each having the same resistance and connected in parallel. The battery to which they are connected has negligible internal resistance. When the set is first switched on, the current flowing through each bulb is 0.1A. Five of the lights fail. How much brighter or dimmer does each of the individual remaining lights become?

A.

Factor of 100/95 dimmer

B.

Factor of 100/95 brighter

C.

Same brightness

D.

Factor of 95 dimmer

E.

Factor of (100/95)2 brighter

Explanation / Answer

B.

Factor of 100/95 brighter

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