Alpha Question Bank for Medical: Physics>Chapter 27 - Electromagnetic Induction>Exercise-1>Q 68

MEDIUM

NEET

IMPORTANT

Earn 100

In the figure magnetic energy stored in the coil is (in steady state)

50% studentsanswered this correctly

Important Questions on Electromagnetic Induction

EASY

NEET

IMPORTANT

Alpha Question Bank for Medical: Physics>Chapter 27 - Electromagnetic Induction>Exercise-1>Q 69

The value of self-inductance of a coil is

5

H

. The value of current changes from

1

A

to

2

A

in

5

s

. The value of induced emf in it is-

EASY

NEET

IMPORTANT

Alpha Question Bank for Medical: Physics>Chapter 27 - Electromagnetic Induction>Exercise-1>Q 70

The self inductance of solenoid of length

L

, area of cross-section

A

and having

N

turns is

EASY

NEET

IMPORTANT

Alpha Question Bank for Medical: Physics>Chapter 27 - Electromagnetic Induction>Exercise-1>Q 71

Energy is stored in the choke coil in the form of-

EASY

NEET

IMPORTANT

Alpha Question Bank for Medical: Physics>Chapter 27 - Electromagnetic Induction>Exercise-1>Q 72

For a inductor coil

L = 0.04 H

, then workdone by source to establish a current of

5 A

in it is

EASY

NEET

IMPORTANT

Alpha Question Bank for Medical: Physics>Chapter 27 - Electromagnetic Induction>Exercise-1>Q 73

Current passing through a coil is changing at the rate of

67.5

ampere per second. If it induces emf of

45 V

, then the self inductance of the coil will be -

HARD

NEET

IMPORTANT

Alpha Question Bank for Medical: Physics>Chapter 27 - Electromagnetic Induction>Exercise-1>Q 74

An inductor coil stores energy

U

when a current

i

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

P

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

EASY

NEET

IMPORTANT

Alpha Question Bank for Medical: Physics>Chapter 27 - Electromagnetic Induction>Exercise-1>Q 75

Two inductors $L_{1}$ and $L_{2}$ are connected in parallel and a time-varying current $i$ flows as shown. The ratio of currents $\frac{i_{1}}{i_{2}}$ at any time $t$ is

Question Image

HARD

NEET

IMPORTANT

Alpha Question Bank for Medical: Physics>Chapter 27 - Electromagnetic Induction>Exercise-1>Q 76

An

L

-

R

circuit with a battery is connected at

t = 0

. Which of the following quantities is not zero just after the connection?