Q.
The voltage of an ac source varies with time according to the equation V=100sin100πcos100πt where t is in seconds and V is in volts. Then
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a
The peak voltage of the source is 100 volts
b
The peak voltage of the source is 50 volts
c
The peak voltage of the source is 100/2volts
d
The frequency of the source is 50 Hz
answer is B.
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Detailed Solution
V=50×2sin100πtcos100πt=50sin200πt⇒V0=50 Volts and v=100Hz
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