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The coefficient of mutual induction betw...

The coefficient of mutual induction between two circuits is equal to the, emf produced in one circuit when the current in the second circuit is

A

Kept steady at 1 ampere

B

Cut-off at 1 ampere level

C

Changed at the rate of 1 A/s

D

Changed from 1 A/s to 2 A/s

Text Solution

Verified by Experts

The correct Answer is:
C
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AAKASH INSTITUTE-ELECTROMAGNETIC INDUCTION-Assignment (SECTION - A)
  1. A magnet is allowed to fall towards a metal ring. During the fall Its ...

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  2. A coil having 500 square loops each of side 10 cm is placed normal to ...

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  3. The coefficient of mutual induction between two circuits is equal to t...

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  4. The back emf in a DC motor is maximum when,

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  5. If the radius of a coil is changing at the rate of 10^(-2) unit in a n...

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  6. If a coil of 40 turns and area 4.0 cm^(2) is suddenly remove from a m...

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  7. The core of transformer is laminated so that

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  8. Two coil are placed close to each other. The mutual inductance of the ...

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  9. A magnetic flux of 500 microweber passing through a 200 turn coil is r...

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  10. A coil of area 0.1m^(2) has 500 tums. After placing the coil in a magn...

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  11. Two circular coils have their centres at the same point. The mutual in...

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  12. When a battery is connected across a series combination of self induct...

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  13. In a uniform magneitc field of induced B a wire in the form of a semic...

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  14. A metal conductor of length 1m rotates vertically about one of its end...

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  15. A copper disc of radius 0.1 m is roated about its centre with 20 revol...

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  16. Two coils of self-inductance 2mH and 8 mH are placed so close togethe...

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  17. The equivalent quantity of mass in electricity is

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  18. Dimensional formula of self-inductance is

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  19. A time varying magnetic flux passing through a coil is given by phi=xt...

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  20. A metalic ring is dropped down, keeping its plane perpendicular to a c...

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