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7.8k views
in Physics by (44.7k points)

The instantaneous values of current and potential difference in an alternating circuit are i = sin ω t and E = 100 cos ω t respectively. r.m.s. value of wattless current (in amp) in the circuit is

(a) 1

(b) 1/√2

(c) 100

(d) Zero 

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1 Answer

0 votes
by (69.7k points)

The correct option is (b).

Explanation:

r.m.s. value of wattless current

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