Consider the following diagram. In which of the two circuits does current lead the voltage?

(a)

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(b)

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Neither (a) nor (b)

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Both (a) and (b)

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Solution

The correct option is A (a)
When power factor is positive, current leads voltage. That is the case in circuit (a)

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Similar questions

Column $I$	Column $II$
$a .$ Only $C$ in the circuit $b .$ Only $L$ in the circuit $c .$ Only $R$ in the circuit	$p .$ Current will lead $q .$ Voltage will lead $r .$ $ϕ = 90^{\circ}$ $s .$ $ϕ = 0^{\circ}$

ϕ

V = 5 s i n (100 π t - \frac{π}{6})

I = 4 s i n (100 π t + \frac{π}{6})

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