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When a charged particle enters a uniform...

When a charged particle enters a uniform magnetic field its kinetic energy

A

remains constant

B

increases

C

decreases

D

becomes zero

Text Solution

Verified by Experts

The correct Answer is:
A
Work doen by magnetic force is zero.
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MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS-MAGNETIC EFFECT OF ELECTRIC CURRENT -I-EXERCISE -1 TOPICAL PROBLEMS)
  1. In the figure shown, there are two semicircles of radii r(r)andr(2) in...

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  2. A current of 0.1 A circulates around a coil of 100 turns and having a ...

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  3. A current i flow through a closed loop as shown in figure. The magneti...

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  4. A current I ampere flows in circular arc of wire whose radius is R, wh...

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  5. Magnetic field due to a ring having n turns at a distance x on its axi...

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  6. A strong magnetic field is applied on a stationary electron, then

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  7. An electron is moving on a circular path of radius r with speed v in a...

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  8. When a charged particle enters a uniform magnetic field its kinetic en...

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  9. A conducting loop carrying a current i is placed in a uniform magnetic...

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  10. Two proton beams going in the same direction repel each other whereas...

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  11. Two parallel conductors A and B of equal lengths carry currents I and ...

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  12. Two thin, long, parallel wires, separated by a distance 'd' carry a cu...

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  13. Two long conductors, separated by a distance d carry current I(1) and ...

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  14. Currents of 10A, 2A are passed through two parallel wires A and B resp...

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  15. The force between two long parallel wires A and B carrying current is ...

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  16. A square current carrying loop abcd is placed near an infinitely long ...

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  17. A metallic loop is placed in a nonuiform magnetic field. Will an emf b...

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  18. A current carrying loop is placed in a uniform magnetic field. The tor...

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  19. Current i is carried in a wire of length L. If the wire is turned into...

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  20. A circular coil of 20turns and radius 10cm carries a current of 5A. It...

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