Current through a circuit containing R and L or R and C or C and L is cos 100πt−3 . sin 100πt Amp.Voltage applied across the combination is 100 cos 100 πt volt. Then power consumed by the circuit is
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a
503 W
b
253 W
c
50 W
d
70 W
answer is C.
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Detailed Solution
(3)i=2cos 100πt.12− sin 100πt . 32 A=2 cos100πt+π3Aυ=100 cos 100 πt volt.∴ Power P = 22 1002 cos π3 watt =50W