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In an `AC` circuit, the reactannce is equal to the resistance. The power factor of the circuit will be

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In an `AC` circuit, the reactannce is equal to the resistance. The power factor of the circuit will be
A. `1/2`
B. `1/(sqrt2)`
C. 1
D. zero
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Correct Answer - B
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Given L Reactance X = Resistance R
`:. Tan phi = X/R = 1 :. phi = 45^(@)`
`:.` Power factor = `cos phi = cos 45^(@) = 1/(sqrt2)`.
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