Home
Class 12
PHYSICS
A wire in the form of a circular loop of...

A wire in the form of a circular loop of radius 10 cm lies in a plane normal to a magnetic field of 100 T. If the wire is pulled to take a square shape in the same plane in 0.1s, find the average induced e.m.f. in loop

A

27 V

B

20 V

C

30 V

D

22 V.

Text Solution

Verified by Experts

Promotional Banner

Similar Questions

Explore conceptually related problems

A wire in the form of a circular loop of one turn carrying a current produces a magnetic field B at the centre. If the same wire is looped into a coil of two turns and carries the same current, the new value of magnetic induction at the centre is

A wire in the form of a circular loop of one turn carrying a current produces a magnetic field B at the centre. If the same wire is looped into a coil of two turns and carries the same current, the new value of magnetic induction at the centre is

A rectangular coil of 100 turns and size 0.1 m xx 0.05 m is placed perpendicular to a magnetic field of 0.1 T. If the field drops to 0.05 T in 0.05 second, the magnitude o the e.m.f. induced in the coil is

A long solenoid with 15 turns per cm has a small loop of area 2.0 cm^2 placed inside the solenoid normal to its axis. If the current carried by the solenoid changes steadily from 2.0 A to 4.0 A in 0.1 s, then what is the induced emf in the loop while the current is changing ?

A square loop of 10 turns has each side 10 cm. It rotates in a magnetic field of 0.25 T and the maximum induced emf is 20 mV the angular speed of rotation is

A circular coil of radius 0.2 m having 2000 turns rotates with a uniform speed of 100 rpm in a uniform magnetic field of 0.2 T. The r.m.s. value of the induced voltage is

A wheel with 10 spokes each of length L m is rotated with a uniform angular velocity omega in a plane normal ti the magnetic field B. The emf induced between the axle and the rim of the wheel

A circular coil of 20 turns and radius 10 cm is placed in a uniform magnetic field of 0.10 T normal to the plane of the coil. If the current in the coil is 5.0 A, what is the (a) total torque on the coil, (b) total force on the coil, (c) average force on each electron in the coil due to the magnetic field? (The coil is made of copper wire of cross-sectional area 10^(-5) m^2 , and the free electron density in copper is given to be about 10^29 m^(-3) .)