Gamma Question Bank for Medical Physics>Chapter 21 - Electromagnetic Induction>Assignment Set-2>Q 2

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Magnetic flux (in $Wb$ ) linked with a closed loop varies with time $t$ (in $s$ ) as $ϕ = 2 t^{2} + 1 .$ The magnitude of induced emf at $t = 1 s$ is

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Important Questions on Electromagnetic Induction

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Gamma Question Bank for Medical Physics>Chapter 21 - Electromagnetic Induction>Assignment Set-2>Q 3

A copper rod of length

2 m

moves in a transverse uniform magnetic field of

3 T .

It is moving with constant velocity of

2 m s^{- 1}

in a direction perpendicular to its length. The induced emf across its ends is

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Gamma Question Bank for Medical Physics>Chapter 21 - Electromagnetic Induction>Assignment Set-2>Q 4

A metallic rod of length

l

is hinged at one end. If it is rotated with angular velocity

ω

in a plane perpendicular to uniform magnetic field

B

, then emf induced across its ends is

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Gamma Question Bank for Medical Physics>Chapter 21 - Electromagnetic Induction>Assignment Set-2>Q 5

A rectangular metal loop $A B C D$ is moving in uniform transverse magnetic field $(B)$ with constant velocity $(v) .$ The induced emf in the loop is

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Gamma Question Bank for Medical Physics>Chapter 21 - Electromagnetic Induction>Assignment Set-2>Q 6

Change in magnetic flux linked with a coil is

6 Wb .

If resistance of the coil is

2 Ω

, then charge flown through the wire is

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Gamma Question Bank for Medical Physics>Chapter 21 - Electromagnetic Induction>Assignment Set-2>Q 7

Electric current flowing in a coil of self inductance

2 mH

is increased from

1 A

to

2 A

in

2 ms .

Induced emf in the coil is

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Gamma Question Bank for Medical Physics>Chapter 21 - Electromagnetic Induction>Assignment Set-2>Q 8

Two closed conducting loops have a mutual inductance of

1 H .

Average e.m.f induced in one loop if current in the other changes by

2 A

in

1 s

, is

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Gamma Question Bank for Medical Physics>Chapter 21 - Electromagnetic Induction>Assignment Set-2>Q 9

Dimensional formula of

[L i^{2}]

is (where

L

is inductance and

i

is current)

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Gamma Question Bank for Medical Physics>Chapter 21 - Electromagnetic Induction>Assignment Set-2>Q 10

A current

2 A

flows through a solenoid of self-inductance

3 mH .

The energy stored inside the solenoid is,