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A voltage v (t) = 100sinωt is applied to a circuit. The current flowing through the circuit is i(t) = 15sin(ωt-30⁰). Find the effective value of current.

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A voltage v (t) = 100sinωt is applied to a circuit. The current flowing through the circuit is i(t) = 15sin(ωt-30⁰). Find the effective value of current.

(a) 9

(b) 10

(c) 11

(d) 12

This question was addressed to me during an online exam.

The query is from Average Power in chapter Power and Power Factor of Network Theory

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Correct choice is (c) 11

For explanation: The expression of effective value of current is Ieff = Im/√2. Given  Im = 15. On substituting the value in the equation we get effective value of current = 15/√2 = 11V.

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