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A wire is bent to form the double loop s...

A wire is bent to form the double loop shown in figure. There is a uniform magnetic field directed into the plane of the loop. If the magnitude of this field is decreasing, current will flow from:

A

A to B and C to D

B

B to A and D to C

C

A to B and D to C

D

B to A and C to D

Text Solution

Verified by Experts

The correct Answer is:
C
By Lenz.s law clockwise current is induced in closed loop. Hence direction of current `a to b to d to c `
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  • A current I flows through a closed loop as shown in figure. The magnetic field induction at the centre 0 is

    A
    `(mu_(0)I)/(4piR)theta`
    B
    `(mu_(0)I)/(4piR)(theta+sintheta)`
    C
    `(mu_(0)I)/(4piR)(pi-theta+sintheta)`
    D
    `(mu_(0)I)/(4piR)(pi-theta+tantheta)`

  • A current l flows through a closed loop as shown in figure .The magnetic field at the centre O is

    A
    `(mu_(0)I)/(2piR)(pi-theta+tantheta)`
    B
    `(mu_(0)I)/(2piR)(pi-theta+sintheta)`
    C
    `(mu_(0)I)/(2piR)(theta+sintheta)`
    D
    None of these

  • The wire loop shown in figure carries a current as shown. The magnetic field at the centre O is ,

    A
    zero
    B
    `(mu_(0) I)/(4) ((1)/(R_(1)) - (1)/(R_(2)))`
    C
    `(mu_(0)I)/(4) ((1)/(R_(2)) + (1)/(R_(1)))`
    D
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