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The Circular Motion

A particle of...

Question

A particle of mass m is moving clockwise in a circular path in a uniform magnetic field as shown below.
What is the sign of charge on the particle?

A

Negative

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B

Positive

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C

Negative or Positive

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D

Neutral

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E

Cannot be determined

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Solution

The correct option is E Negative or Positive
Particle is moving in a circular path so it is experiencing a magnetic force , which means it is a charged particle because a neutral particle doesn't experience a force in magnetic field but the direction of motion of particle is not given in the figure therefore it may be a negative or positive particle .

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