A 20 V AC is applied to a circuit consisting of a resistance and a coil with negligible resistance. If the voltage across the resistance is 12 V , the voltage across the coil is

Question

A 20 V AC is applied to a circuit consisting of a resistance and a coil with negligible resistance. If the voltage across the resistance is 12 V , the voltage across the coil is, 16 V, 10 V, 8 V, 6 V

MARKS App · Accepted Answer

The voltage across L R combination is given by V 2 = V R 2 + V L 2 V L = V 2 - V R 2 V L = 400 - 144 = 256 V L = 16 V

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