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In Fig. there is a frame consisting of t...

In Fig. there is a frame consisting of two square loops having resistors and inductors as shown. This frame is placed in a uniform but time-varying magnetic field in such a way that one of the loops is placed in crossed magentic field and the other is placed in dot magnetic field. Both magnetic fields are perpendicular to the planes of the loops.
If the magnetic field is given by `B = (20 + 10 t) Wb m^(-2)` in both regions `[l = 20 cm, b = 10 cm`, and `R = 10 Omega`, `L = 10 H`),
The direction of induced current in the bigger loop will be

A

Clockwise

B

Anticlockwise.

C

First clockwise for some time then anticlockwise and so on .

D

First anticlockwise for some time then clockwise and so on.

Text Solution

Verified by Experts

The correct Answer is:
B
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Knowledge Check

  • In Fig. there is a frame consisting of two square loops having resistors and inductors as shown. This frame is placed in a uniform but time-varying magnetic field in such a way that one of the loops is placed in crossed magentic field and the other is placed in dot magnetic field. Both magnetic fields are perpendicular to the planes of the loops. If the magnetic field is given by B = (20 + 10 t) Wb m^(-2) in both regions [l = 20 cm, b = 10 cm , and R = 10 Omega , L = 10 H ), The current in the frame as a funtion of time will be

    A
    `(1)/(20) (1 - e^(-t))`
    B
    `(1)/(40) (1 - e^(-t))`
    C
    `(1)/(20) e^(-t)`
    D
    `(1)/(10) e^(-t)`

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    A
    `0.3 V`
    B
    `0.1 V`
    C
    `0.5 V`
    D
    `0.4 V`

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    A
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    B
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    C
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    D
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