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Alternating current lead the applied e.m...

Alternating current lead the applied e.m.f. by `pi/2` when the circuit consists of –

A

only resistance

B

only capacitor

C

only an inductance coil

D

capacitor and resistance both

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The correct Answer is:
B
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MOTION-ALTERNATING CURRENT-EXERCISE - 1
  1. An alternating current changes from a complete cycle in 1mus, then the...

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  2. An ac circuit, the current is given by i = 4 sin (100pit + 30^(@)) amp...

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  3. The instantaneous value of current in an ac circuit is I = 2 sin (100p...

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  4. Alternating current lead the applied e.m.f. by pi/2 when the circuit c...

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  5. Three bulbs of 40, 60 and 100 watt are connected in series with the so...

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  6. Alternating current can not be measured by D.C. Ammeter because

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  7. In an L.C.R series circuit R = 1Omega, X(L) = 1000Omega" and "X(C) = 1...

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  8. The potential difference between the ends of a resistance R is V(R), b...

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  9. Which of the following statements is correct for L–C–R series combinat...

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  10. In a series resonant L–C–R circuit, if L is increased by 25% and C is ...

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  11. Let f = 50 Hz, and C = 100 muF in an AC circuit containing a capacitor...

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  12. In a series C-R circuit shown in figureure, the applied voltage is 10 ...

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  13. The electric supply line is houses works on 220 V. The amplitude of e....

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  14. The inductive reactance of a coil is 1000Omega. If its self inductance...

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  15. A coil of inductance 0.1 H is connected to an alternating voltage gene...

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  16. A coil has reactance of 100Omega when frequency is 50Hz. If the freque...

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  17. A resistance of 50Omega, an inductance of 20//pi henry and a capacitor...

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  18. The percentage increase in the impedance of an ac circuit, when its po...

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  19. A choke coil in a transformer of negligible resistance carries 5 mA cu...

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  20. An ac-generator supplying voltage E to a circuit which consists of a r...

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