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In an ac circuit, the instantaneous emf ...

In an ac circuit, the instantaneous emf and current are given by e = 100 sin 30 t, `i` = 20sin`(30t-(pi)/(4))`.
In one cycle of ac, the average power consumed by the circuit and the wattless current are, respectively

A

`(50)/(sqrt(2))`,0

B

50,0

C

50,10

D

`(1000)/(sqrt(2)),10`

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