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If the current through an inductor of inductance $L$ is given by $I = I_{0} \sin (ω t)$ , then the voltage across the inductor will be:-

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Important Questions on Alternating Current

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Beta Question Bank for Medical: Physics>Chapter 28 - Alternating Current>Exercise (Conceptual Questions)>Q 51

There is a

5 Ω

resistance in an A.C., circuit. Inductance of 0.1 H is connected with it in series. If equation of A.C. e.m.f. is 5 sin 50 t then the phase difference between current and e.m.f. is :-

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Beta Question Bank for Medical: Physics>Chapter 28 - Alternating Current>Exercise (Conceptual Questions)>Q 53

200 Ω

resistance and

1 H

inductance are connected in series with an A.C. circuit. The frequency of the source is

\frac{200}{2 π}

. Then phase difference in between

V

and

I

will be:

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Beta Question Bank for Medical: Physics>Chapter 28 - Alternating Current>Exercise (Conceptual Questions)>Q 55

In showing figure find $V_{R}$ .

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Beta Question Bank for Medical: Physics>Chapter 28 - Alternating Current>Exercise (Conceptual Questions)>Q 57

An inductance of

1 mH,

a condenser of

10 μ F

and a resistance of

50 Ω

are connected in series. The reactance of inductor and condensers are same. The reactance of either of them will be

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Beta Question Bank for Medical: Physics>Chapter 28 - Alternating Current>Exercise (Conceptual Questions)>Q 58

A circuit contains R, L and C connected in series with an A. C. source. The values of the reactances for inductor and capacitor are

200 Ω

and

600 Ω

respectively and the impedance of the circuit is Z₁. What happens to the impedance of the same circuit if the values of the reactances are interchanged:-

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Beta Question Bank for Medical: Physics>Chapter 28 - Alternating Current>Exercise (Conceptual Questions)>Q 61

An alternating voltage is connected in series with a resistance

R

and an inductance

L

. If the potential drop across the resistance is

200 V

and across the inductance is

150 V

, the applied voltage:

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Beta Question Bank for Medical: Physics>Chapter 28 - Alternating Current>Exercise (Conceptual Questions)>Q 62

For a series

R L C

circuit:-
(a) Voltage across

L

and

C

are differ by

π

.
(b) Current through

L

and

R

are in the same phase.
(c) Voltage across

R

and

L

differ by

\frac{π}{2}

.
(d) Voltage across

L

and current through

C

differ by

\frac{π}{2}

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Beta Question Bank for Medical: Physics>Chapter 28 - Alternating Current>Exercise (Conceptual Questions)>Q 63

A series

R L C (R = 10 Ω, X_{L} = 20 Ω, X_{C} = 20 Ω)

circuit is supplied by

V = 10 \sin (ω t)

V

then power dissipation in the circuit is:-

If the current through an inductor of inductance L is given by I=I0sinωt, then the voltage across the inductor will be:-

Important Questions on Alternating Current

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If the current through an inductor of inductance $L$ is given by $I = I_{0} \sin (ω t)$ , then the voltage across the inductor will be:-