Question #93603

When a certain a.c supply is connected to a lamp, it lights with the same brightness as it does with a 12v d.c battery. The r.m.s value of the a.c supply is
1

Expert's answer

2019-09-02T09:26:22-0400

The same brightness means the same heat dissipation power, so that the rms value of the AC voltage is equal to the DC voltage, i.e. 12 V.


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Comments

Bilkisu Aliyu
07.09.19, 14:44

The answer was correct

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