Home
Class 12
PHYSICS
The two coils A and B are same as in the...

The two coils A and B are same as in the picture given below . The coil A is made to rotate about a vertical axis. No current flows in B if A is at rest. The current in coil A, when the current in B (at t = 0) is counterclockwise and the coil A is as shown at this instant t = 0, is

A

constant current clockwise

B

varying current clockwise

C

varying current counterclockwise

D

constant current counterclockwise

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • ELECTROMAGNETIC INDUCTION & ALTERNATING CURRENT

    CHHAYA PUBLICATION|Exercise NCERT EXEMPLAR QUESTIONS WITH ANSWER HINT (MCQ-2)|4 Videos

  • ELECTROMAGNETIC INDUCTION & ALTERNATING CURRENT

    CHHAYA PUBLICATION|Exercise EXERCISE|19 Videos

  • ELECTROMAGNETIC INDUCTION & ALTERNATING CURRENT

    CHHAYA PUBLICATION|Exercise NCERTS TEXTBOOK QUESTIONS WITH ANSWER HINT|21 Videos

  • ELECTRIC POTENTIAL

    CHHAYA PUBLICATION|Exercise CBSE Scanner|13 Videos

  • ELECTROMAGNETIC WAVES

    CHHAYA PUBLICATION|Exercise CBSE SCANNER|17 Videos

Similar Questions

Explore conceptually related problems

There are two coils A and B. When A is brought towards B, a current flows through B which stops when A stops moving. The current in B is counterclockwise. B is stationary when A moves. We can infer that

A cylindrical bar magnet is placed along the axis of a circular coil. If the magnet is rotated about that axis, will any current be induced in the coil?

Two concentric circular coild X and Y or radii 16 cm and 10 cm, respectively, lie in the same vertical plane oriented along the north to south direction. Coil X has 20 turns and carris a current of 18A. The sense of the current in X is anticlockwise and in Y is clockwise, for an observer looking at the coils facing west. Give the magnitude and direction of the net magnetic field due to the coils at their centre.

A cylindrical bar magnet is kept along the axis of a circular coil. If the magnet is rotated about the axis, will there be any current induced in that coil?

A varying current in a coil change from 10A to 0 in 0.5sec. If the average emf induced in the coil is 220V, the self inductance of the coil is :

The current in a coil at time t is I = t^2e^(-t) . The self inductance of the coil is L= 2mH . How much time it will take to e.m.f. be zero?