Home
Class 12
PHYSICS
If the flux associated with a coil chang...

If the flux associated with a coil changes at the rate of `240` weber in every `2` minutes, then the induced e.m.f. is

A

`2` volt

B

`0.20` volt

C

`3` volt

D

`6` volt

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • ELECTROMAGNETIC INDUCTION

    TARGET PUBLICATION|Exercise CRITICAL THINKING|84 Videos
  • ELECTROMAGNETIC INDUCTION

    TARGET PUBLICATION|Exercise COMPETITIVE THINKING|158 Videos
  • ELASTICITY

    TARGET PUBLICATION|Exercise Evaluation test|14 Videos
  • ELECTROSTATICS

    TARGET PUBLICATION|Exercise EVALUATION TEST|14 Videos

Similar Questions

Explore conceptually related problems

If the flux associated with a coil varies at the rate of 1 Wb/min, the induced emf is

The mutual inductance between two coils is 1.25 henry. If the current in the primary changes at the rate of 80 ampere//second , then the induced e.m.f. in the secondary is

The magnetic flux associated with a coil changes from zero to 5xx10^(-5)Wb in 25s. The emf induced in the coil is

Faraday's second law of EMI says that the magnitude of e.m.f. induced in a cuicuit is directly proportional to the rate of change of magnetic flux linked with circuit, i.e., e prop (d phi)/(dt) . It means if the magnetic flux linked with a circuit changes at a faster rate, the induced e.m.f. is larger and vice-versa. Read the above passage and answer the following question : (i) Coil A is held in a very strong magnetic field and coil B is held in a weak magnetic field. In which coil do you expect larger induced e.m.f. ? (ii) A coil is moved in a uniform magnetic field. When do you expect induced e.m.f. in the coil ? (iii) What values of life do you learn from Faraday's second law of EMI ?

An e.m.f. of 12 "volts" is induced in a given coil when the current in it changes at the rate of 48 amperes per minute. The self-inductance of the coil is

The current in a coil of inductance 5H decreases at the rate of 2A//a . The induced e.m.f. is

Assertion (A): Whenever the magnetic flux linked with a closed coil changes there will be an induced emf as well as an induced current. Reason (R ) : Accroding to Faraday, the induced emf is inversely proportional to the rate of change of magnetic flux linked with a coil.

The magnetic flux linked with a coil is given by an equation phi (in webers ) = 8t^(2)+3t+5 . The induced e.m.f. in the coil at the fourth second will be

Show that the rate of change of magnetic flux has the same units as induced e.m.f.

The mutual inductance between two coils is 2.5 H. If the current in one coil is changed at the rate of 1 As^(-1), what will be the emf induced in the other coil?