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A coil wire rotates about a horizontal n...

A coil wire rotates about a horizontal north-south axis with its plane kept along axis. Assume that at the point, the earth's magnetic field is along north direction. How does the magnetic field contribute to the emf induced in this coil?

A

Both the vertical and horizontal components contribute to the induced emf

B

Only the horizontal component induces an emf

C

Only vertical component induces an emf

D

There is no emf induced in the coil

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The correct Answer is:
C
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AAKASH INSTITUTE ENGLISH-ELECTROMAGNETIC INDUCTION-Assignment (SECTION - A)
  1. A spherical surface is spilt into two parts S(1) and S(2) by a circula...

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  2. A sphere of radius R is placed near a long straight wire that carries ...

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  3. A coil wire rotates about a horizontal north-south axis with its plane...

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  4. A magnent moves towards a coil. Which of the factors can affect the em...

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  5. A rectangular loop of wire is placed perpendicualr to a uniform magnet...

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  6. Which of the following can produce maximum induced emf?

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  7. The induced emf produced when a magnet is inserted into a coil does no...

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  8. A cylindrical bar magnet is kept along the axis of a circular coil. If...

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  9. A circular wire loop of radius r is placed in a region of uniform magn...

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  10. When a non magnetic metallic strip is moved away from between the pole...

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  11. A magnet is allowed to fall towards a metal ring. During the fall Its ...

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  12. A coil having 500 square loops each of side 10 cm is plance normal to ...

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

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

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

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

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  17. The core of a transformer is laminated so that :

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

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

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

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