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If the current in the primary coil is re...

If the current in the primary coil is reduced from 3.0 ampere to zero in 0.001 second, the induced e.m.f in the secondary coil is 1500 volt. The mutual inductance of the two coils will be-

A

5

B

0.5

C

4.5

D

50

Text Solution

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The correct Answer is:
a
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MOTION-ELECTRO MAGNETIC INDUCTION-EXERCISE-1
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  2. Out of the two coils placed near each other, when a current of 2 amp i...

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  3. An inductor may store energy in

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  4. On making a coil of copper wire of length  and coil radius r, the val...

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  5. v34

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  6. The coefficient of coupling between two coil is maximum when the two c...

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  7. Two coils of self-inductance L(1) and L(2) are placed closed to each o...

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  8. The mutual inductance of an induction coil is 5H . In the primary coil...

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  9. The value of coefficient of mutual induction in two coils can be incre...

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  10. If the current in the primary coil is reduced from 3.0 ampere to zero ...

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  11. A solenoid having a core of cross-section 4cm^(2), half air and half i...

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  12. The coefficients of self induction of two inductance coil are 0.01 H a...

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  13. Two identical solenoid coils, each of self inductancen L are connected...

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  14. If two coils of negligible mutual induction and having coefficient of ...

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  15. To transmit electrical energy from a generator to distant consumers

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  16. A step down transformer is used to reduce the main supply of 200 V to ...

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  17. A step up transformer operates on a 230 V line and a load current of 2...

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  18. A transformer is used to light a 140 W, 24 V lamp from 240 V AC mains....

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  19. In a step-up transformer, in comparison with the secondary the primary...

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  20. In the secondary coil of step-up transformer , the number of turns are

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