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When a metallic rod falls freely, keepin...

When a metallic rod falls freely, keeping its length horizontal and parallel to north-south direction, emf induced across it is ______

A

increases with time

B

decreases with time

C

zero

D

remains constant

Text Solution

Verified by Experts

The correct Answer is:
C
Because magnetic flux is not cut by the falling rod.
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KUMAR PRAKASHAN-ELECTROMAGNETIC INDUCTION-Section D MCQs (From DARPAN Based on Textbook )
  1. When a metallic rod falls freely, keeping its length horizontal and pa...

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  2. One magnet is moved towards a coil, first speedily and then slowly. Th...

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  3. Length of one metal rod is 1m. 2T is the intensity of the magnetic fie...

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  4. rule is used to find the direction of induced current in a conducting ...

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  5. When a bar magnet is placed on the axis of a coil with north pole faci...

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  6. When current passing through a coil increases, direction of induced em...

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  7. When a bar magnet is brought closer to a coil, emf generated in the co...

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  8. Faraday's law on electromagnetic induction gives

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  9. The Lenz's force acting on a conducting rod is

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  10. Lenz's law is statement of

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  11. According to the Faraday's law of electromagnetic induction

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  12. The direction of induced emf during electro magnetic induction is give...

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  13. In figure a rectangular loop is being pulled to the right, away from t...

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  14. The earth's magnetic field at a place with zero declination is 3xx 10^...

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  15. A helicopter is moving in upward direction with speed of 10 m/s. If th...

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  16. A conducting rod of length I and velocity v moves in a magnetic field ...

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  17. The distance between two extreme points of two wings of an Aeroplane i...

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  18. A D.C. motor working on 200V have initial current of 5A but when it at...

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  19. A straight line conductor of length 0.4 m is moved with a speed of 7 m...

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  20. A square (each side of length L) wire loop is kept with a long straigh...

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