You visited us 16 times! Enjoying our articles? Unlock Full Access!

Byju's Answer

Standard XII

Physics

Magnetic Flux and Faraday's Law

When a coil o...

Question

When a coil of cross-sectional area $A$ and number of turns $N$ is rotated in a uniform magnetic field $B$ with angular velocity $ω$ , then the maximum emf induced in the coil will be

B N A

No worries! We‘ve got your back. Try BYJU‘S free classes today!

\frac{B A ω}{N}

No worries! We‘ve got your back. Try BYJU‘S free classes today!

B N A

ω

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

z e r o

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is C $B N A$ $ω$
$e m f =$ rate of change of flux
$= B A N ω$

Suggest Corrections

Similar questions

Q. A coil of cross-sectional area

A

having

n

turns is placed in a uniform magnetic field

B

. When it is rotated with an angular velocity

ω

, the maximum e.m.f. induced in the coil will be

Q. A coil of number of turns

N

, area

A

is rotated at a constant angular speed

ω

, in a uniform magnetic field

B

and connected to a resistor

R

.Deduce expressions for
Maximum emf induced in the oil.
Power dissipation in the coil.

Q. A rectangular coil of single turn, having area A, rotates in a uniform magnetic field B with an angular velocity

ω

about an axis perpendicular to the field. If initially the plane of the coil is perpendicular to the field, then the average induced emf when it has rotated through

90^{o}

is:

Q. A flat coil,

C

n

turn, area

A

and resistance

R

, is placed in a uniform magnetic field of magnitude

B

. The plane of the coil is initially perpendicular to

B

. The coil is rotated by an angle

θ

about a diameter and charge of amount

Q

flows through it. If the coil rotates with a constant angular velocity

ω

, the emf induced in it:

Q. A plane circular coil

P

of area

A

is placed in a uniform magnetic induction field

B

such that the normal to the coil plane makes an angle of

30^{\circ}

with the direction of the field. The coil is now rotated in the field by ''wobbling'' such that the normal always makes angle

30^{\circ}

with the field during rotation, the angular velocity of rotation being

ω

. Then the emf induced in the coil will be :

Join BYJU'S Learning Program

When a coil of cross-sectional area A and number of turns N is rotated in a uniform magnetic field B with angular velocity ω, then the maximum emf induced in the coil will be

The correct option is C BNA ωemf= rate of change of flux =BANω

When a coil of cross-sectional area $A$ and number of turns $N$ is rotated in a uniform magnetic field $B$ with angular velocity $ω$ , then the maximum emf induced in the coil will be

The correct option is C $B N A$ $ω$
$e m f =$ rate of change of flux
$= B A N ω$