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A square loop of side $a$ has resistance $R$ and lies at distance $a$ from an infinite straight wire carrying $I_{0} .$ Find the charge flown through the loop when the loop has turned through an angle of $120$ about an axis $A B$ as shown.

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Important Questions on Electromagnetic Induction

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Gamma Question Bank for Engineering Physics>Chapter 20 - Electromagnetic Induction>Assignment>Q 2

A conductor of length

l

is placed perpendicular to a horizontal uniform magnetic field

B .

Suddenly a certain amount of charge is passed through it, when it is found to jump to a height

h .

The amount of charge that passes through the conductor is :

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Gamma Question Bank for Engineering Physics>Chapter 20 - Electromagnetic Induction>Assignment>Q 3

In a square loop of side length

' a',

current

I_{0}

is flowing as shown. Magnetic flux associated with region

x > 0

x y

plane is

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Gamma Question Bank for Engineering Physics>Chapter 20 - Electromagnetic Induction>Assignment>Q 4

A rectangular loop of width

b = (e - 1) a,

length I, mass

m

and resistance

R

is placed closed to and coplanar with a very long fixed straight conductor carrying

I_{0} .

The current in the conductor is suddenly switched off. Velocity of loop after current is switched off, is

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Gamma Question Bank for Engineering Physics>Chapter 20 - Electromagnetic Induction>Assignment>Q 5

In the given

L R

circuit, switch

S

is closed at

t = 0 .

The energy stored in the magnetic field, at time

t_{0} = \frac{3 L}{2 R} \ln 2

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Gamma Question Bank for Engineering Physics>Chapter 20 - Electromagnetic Induction>Assignment>Q 6

Two points

B

and

C

are such that length of

A B

and

B C

l_{1}

and

l_{2}

respectively are placed inside an infinite solenoid as shown in figure. The current through solenoid is varying with time. Line

A B

and

B C

are in plane perpendicular to solenoid axis. If strength of induced electric field at

B

and

C

are same then value of

θ,

is
(Given :

l_{1} + l_{2} <

radius of solenoid. And Point

A

is centre of the cross-sectional area).

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Gamma Question Bank for Engineering Physics>Chapter 20 - Electromagnetic Induction>Assignment>Q 8

A rectangular coil is being rotated about an axis as shown. A long current carrying wire is along the axis of rotation. Then the induced emf in this coil will be

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Gamma Question Bank for Engineering Physics>Chapter 20 - Electromagnetic Induction>Assignment>Q 9

There exist a magnetic field perpendicular to the loop which varies uniformly with rate

α .

Loop radius is a and resistance of the loop is $R .$ Induced power in the loop is

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Gamma Question Bank for Engineering Physics>Chapter 20 - Electromagnetic Induction>Assignment>Q 13

The primary and secondary coils of a transformer have

50

and

1500

turns, respectively. If the magnetic flux

ϕ

linked with the primary coil is given by

ϕ = ϕ_{0} + 4 t

, where

ϕ

is in

Wb

t

is in

s

and

ϕ_{0}

is a constant, the output voltage across the secondary coil is

A square loop of side a has resistance R and lies at distance a from an infinite straight wire carrying I0. Find the charge flown through the loop when the loop has turned through an angle of 120 about an axis AB as shown.

Important Questions on Electromagnetic Induction

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A square loop of side $a$ has resistance $R$ and lies at distance $a$ from an infinite straight wire carrying $I_{0} .$ Find the charge flown through the loop when the loop has turned through an angle of $120$ about an axis $A B$ as shown.