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>>Alternating Current
>>Basics of AC
>> $Voltage and current in an A...$

Question

Voltage and current in an AC circuit are given by $V = 10 sin (50 π t - \frac{π}{6})$ and $i = 2 sin (50 π t + \frac{π}{4})$ .

A

Current leads the voltage by $3 0^{\circ}$

B

Voltage leads the current by $4 5^{\circ}$

C

Current leads the voltage by $7 5^{\circ}$

D

Voltage lags the current by $4 5^{\circ}$

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Correct option is

C

Current leads the voltage by $7 5^{\circ}$

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