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The coils in resistance boxes are made f...

The coils in resistance boxes are made from doubled insulated wire to nullify the effect of

A

heating

B

magnetism

C

pressure

D

self induced emf

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The correct Answer is:
D
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NIKITA PUBLICATION-ELECTROMAGNETIC INDUCTION-MCQs
  1. The self inductance of a coil does not depend upon

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  2. The self inductance of a coil does not depend upon

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  3. The coils in resistance boxes are made from doubled insulated wire to ...

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  4. If the number of turns per units length of a coils of solenoid is doub...

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  5. A coil of insulated wire is connected to a battery. If it is connected...

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  6. If the rate of change of current of 1A/s in one coil, induced an emf o...

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  7. If the rate of change of current in primary coil is doubled, the induc...

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  8. Mutual induction is the produced of induced emf in a coil due to the c...

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  9. The mutual inductance depends upon

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  10. The self inductance of a coil is a measure of

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  11. If 'N' is the number of turns in a coil, the value of self inductance ...

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  12. An inductor may store energy in

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  13. One henry is equal to

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  14. When the number of turns in a coil is doubled without any change in th...

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  15. Two pure inductors each of self-inductance L are connected in parallel...

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  16. The inductance of a coil is proportional to

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  17. When the current in a coil charges from 2A to 4A in 0.05 s, emf of 8 v...

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  18. What id the self -inductance of a coil which produce 5 V when the cur...

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  19. If the rate of change of current is 1A per second in one coil induces ...

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  20. If the current increases from zero to 1A in 0.1 s in a coil of 5 mH th...

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