Gamma Question Bank for Medical Physics>Chapter 21 - Electromagnetic Induction>Assignment Set-2>Q 13

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If given arrangement is moving towards right with speed $v$ in the uniform magnetic field, then induced current in the loop is (resistance of loop is $R$ )

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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 14

According to Faraday's laws of electromagnetic induction, magnitude of induced emf in a coil is proportional to,

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Gamma Question Bank for Medical Physics>Chapter 21 - Electromagnetic Induction>Assignment Set-2>Q 15

A straight wire of length

ℓ

is moving with speed

v

in a direction perpendicular to length. If a uniform magnetic field of strength

B

is existing in the region, which is perpendicular to both

ℓ

and

v

, then emf across ends of wire is proportional to

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Gamma Question Bank for Medical Physics>Chapter 21 - Electromagnetic Induction>Assignment>Q 1

What will be the direction of current in the coil $A$ as the switch $S$ is closed?

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

The armature of a generator of resistance

1 Ω

is rotated at its rated speed and produces

125 V

without load and

115 V

with full load. The current in the armature coil is

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

A positive charge $q$ moves along the line $A B$ , which lies in the same plane as a circular loop of conducting wire as shown in the figure. The direction of current induced in the loop is

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

Radius of a circular loop placed in a perpendicular uniform magnetic field is increasing at a constant rate of

r_{0} m s^{- 1} .

If at any instant radius of the loop is

r

, then emf induced in the loop at that instant will be

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

The magnetic flux through a stationary loop with resistance

R

varies during interval of time

T

as

ϕ = at (T - t)

. The heat generated during this time neglecting the inductance of loop will be: -

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

A conducting rod $A B$ of length $l$ is projected on a frictionless frame $P S R Q$ with velocity $v_{0}$ at any instant. The velocity of the rod after time $t$ is

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