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The co-efficient of mutual inductance wh...

The co-efficient of mutual inductance when magnetic flux changes by `2 * 10^(-2)` Wb current changes by 0.01A is

A

2H

B

4H

C

3H

D

8H

Text Solution

Verified by Experts

The correct Answer is:
A
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The flux linked with a large circular coil of radius R is 0.5 xx 10^(-4) Wb . When a current of 0.5 A flows through a small neighbouring coil of radius r, calculate the coefficient of mutual inductance for the given pair of coils. If the current through the small coil suddenly falls to zero, what would be its effect in the larger coil?

Does change in magnetic flux induce emf or current?

Knowledge Check

  • The mutual inductance of an induction coil is SH. In the primary coil the current reduces from SA to O in 10s^(-1) . What is the induced emf in the secondary coil?

    A
    2500V
    B
    25000V
    C
    2510V
    D
    zero

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