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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

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The correct Answer is:
C
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AAKASH INSTITUTE ENGLISH-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 plance 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 a transformer is laminated so that :

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  8. In the circuit of figure , the bulb will be become suddenly bright , ...

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  9. A conducting square loop of side l and resistance R moves in its plane...

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  10. The coefficient of mutual inductance of two coils depends on

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

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

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

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

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  15. The variation of induced emf (epsilon ) with time (t) in a coil if a s...

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  16. In a uniform magnetic field B a wire in the form of a semicircle of ra...

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  17. A metal conductor of length 1 m rotates vertically about one of its en...

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  18. A copper disc of the radius 0.1 m is rotated about its centre with 20 ...

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  19. Two coils of self-inductance 2 mH and 8 mH are placed, so close togeth...

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  20. As a result of change in the magnetic flux linked to the closed loop s...

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