Q.
Current flowing through a 10Ω resistor is given by i=(3+4cos 100πt)A. Then average power consumed by the resistor is
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a
150 W
b
170 W
c
75 W
d
220 W
answer is B.
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Detailed Solution
Irms=32+422A=17A∴ P=Irms2 R=17×10W=170 W
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