Home
Class 12
PHYSICS
An e.m.f. is produced in a coil, which i...

An e.m.f. is produced in a coil, which is not connected to an external voltage source. This can be due to

A

The coil being in a time varying magnetic field

B

The coil moving in a constant magnetic field

C

The coil moving in a time varying magnetic field

D

All of the above

Text Solution

Verified by Experts

The correct Answer is:
D

Emf is generated as flux is changed with time .
Promotional Banner

Topper's Solved these Questions

  • SAMPLE PAPER 04 (SOLVED)

    EDUCART PUBLICATION|Exercise SECTION-B|24 Videos
  • SAMPLE PAPER 04 (SOLVED)

    EDUCART PUBLICATION|Exercise SECTION-C|6 Videos
  • SAMPLE PAPER - 8

    EDUCART PUBLICATION|Exercise Section C|6 Videos
  • SAMPLE PAPER 2

    EDUCART PUBLICATION|Exercise SECTION-C|6 Videos

Similar Questions

Explore conceptually related problems

An e.m.f. is produced in a coil, which is not connected to an exteranl voltage source. This can be due to

The induced e.m.f. in a coil does not depend on

The e.m.f. induced in a coil of wire, which is rotating in a magnetic field, does not depend on

A series L-C-R circuit is connected to an alternating voltage source of frequecy f. If the current leads the e.m.f. By 45^(@) , then the value of C is

An e.m.f. of 12"volts" is produced in a coil when the current in it changes at the rate of 45 amp//minute . The inductance of the coil is

Which of the following is true for an ideal capacitor connected to a sinusoidal voltage source ?

Asseration:Self-inductance is called the inertia of electricity. Reason:self-inductance is the phenomenon, according to which an opposing induced e.m.f. is produced in a coil as a result of change in current or magnetic flux linked in the coil.

Two series-connected capacitors of the sarne size, one filled with air and the other with a dielectric, are connected to a voltage source. To which of the capacitors a higher voltage is applied?

A battery of e.m.f. 2 V and internal resistance 2Omega is connected to an external resistance 8Omega . If the length of the conductor is 4 m, then potential gradient between the two ends of the wire is

A current of 4 A flows in a coil when connected to a 12 V dc source. If the same coil is connected to a 12 V, 50 rad s^(-1) ac source, a current of 2.4 A flows of the coil in the circuit. The power developed in the circuit of a 2500 (mu)F capacitor that is connected in series with the coil is