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Mutual Induction

7. A current ...

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7. A current of 3A flowing through a coil of inductance 2H is increasing at the rate of 0.5 A/s. The energy stored in the inductor per unit time at this instant is

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Q. A current of

2 A

is increasing at the rate of

4 A / s

through a coil of inductance

2 H

. The energy stored in the inductor per unit time is

Q. An inductor coil stores

0.25 J

of energy when current

i

is passed through it and dissipates the energy at the rate of

0.5 W

. The time constant of the circuit, when this coil is connected across a battery of zero internal resistance, is :

Q. Two different coils have self- inductance

L_{1} = 8 mH, L_{2} = 2 mH

. The current in one coil is increased at a constant rate. The current in the second coil is also increased at the same rate. At a certain instant of time, the power given to the two coils is the same. At that time, the current, the induced voltage and the energy stored in the first coil are

i_{1}, V_{1}

W_{1}

respectively. Corresponding values for the second coil at the same instant are and

i_{2}, V_{2}

W_{2}

respectively. Then:

Given current of 4 A flows through an inductor of 2 H. What is the energy stored in inductor?

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