Home
Class 12
PHYSICS
The radius of circular loop is 'a'. Magn...

The radius of circular loop is 'a'. Magnetic field is incerasing at a constant rate a. Magnetic field of a confined with the axis of the loop. Resistance per unit length of the wire of loop is `rho`. Choose the correct option(s):

A

Current in the loop PQRS `(aalpha)/(2rho)` anticlockwise

B

Current in the loop PQRS is `(aalpha)/(ho)` clockwise

C

Current in the wire PR is zero

D

Current in the wire PR is `(piaalpha)/(2rho)`

Text Solution

Verified by Experts

The correct Answer is:
A, C
Doubtnut Promotions Banner Mobile Dark
|

Similar Questions

Explore conceptually related problems

A current loop in a magnetic field

Current loop in a uniform magnetic field

Knowledge Check

  • A current loop in a magnetic field

    A
    can be in equilibrium in two orientations, both the equilibrium states are unstable.
    B
    can be in equilibrium in two orientations, one stable while the other is unstable
    C
    experiences a torque whether the field is uniform or non uniform in all orientations.
    D
    can be in equilibrium in one orientation.

  • A current loop in a magnetic field

    A
    Experiencs a torque whether the field is unifrom or nonuuniform in all orientations
    B
    Can be in equilibrium in one orientation
    C
    Can be in equilibrium in two orientrations, both the equilibrium states are unsatable
    D
    Can be in equilibriuim in tow orientations, one stable while the other in unstable.

  • The radius of the circular conducting loop shown in is R. magnetic field is decreasing at a constant rate alpha . Resisitance per unit length of the loop is rho . Then, the current in wire AB is ( AB is one of the diameters)

    A
    (a) `(Ralpha)/(2rho) from A to B`
    B
    (b) `(Ralpha)/(2rho) from B to A`
    C
    ( c) `(Ralpha)/(rho) from A to B`
    D
    (d) `0`

    • Similar Questions

    Explore conceptually related problems

    Magnetic Field || Wire || Loop

    A circular loop of radius 9.7 cm carries a current 2.3 A. Obtain the magnitude of the magnetic field at the centre of the loop .

    Radius of a circular loop placed in a perpendicular uniform magnetic field is increasing at a constant rate of r_(o)ms^(-1) If at any instant radius of the loop is r, then emf induced in the loop at that instant will be

    Radius ol a circular luop placed in a perpendicular uniform magnetic field is increasing at a constant rate of r_(o)ms^(1) . If at any instant radius of the loop is r, then emf induced in the loop at that instant will be

    A rectangular loop of metallic wire is of length a and breadth b and carries a current i. The magnetic field at the centre of the loop is

    Home
    Profile