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The emf and the current in a circuit are...

The emf and the current in a circuit are – `E=12sin(100pit),i=4sin(100pit+pi//3)` then–

A

The current leads the emf by `60^(@)`

B

The current lags the emf by `60^(@)`

C

The emf leads the current by `60^(@)`

D

The phase difference between the current and the emf is zero

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The correct Answer is:
A
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MOTION-ALTERNATING CURRENT-EXERCISE - 2 (LEVEL - I)
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  5. The emf and the current in a circuit are – E=12sin(100pit),i=4sin(100p...

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  8. A series LCR circuit is tuned to resonance. The impedance of the circu...

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  9. A capacitor C with a charge Q(0) is connected across an inductor throu...

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  10. When 100" volt" dc is applied across a coil, a current of 1 amp flows ...

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  11. A series circuit consists of a resistance, inductance and capacitance....

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  12. Power factor of an L-R series circuit is 0.6 and that of a C-R series ...

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  15. The power factor of the circuit in fig. is 1//sqrt(2). The capacitance...

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  16. An L-C-R series circuit with 100Omega resistance is connected to an AC...

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  17. A current of 4A flows in a coil when connected to a 12V DC source. If ...

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  18. A capacitor C=2muF and an inductor with L = 10 H and coil resistance 5...

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