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A Mysterious Force

Which of the ...

Question

Which of the following does not affect the motion of a moving electron?

A

Electric field applied in the direction of motion

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B

Magnetic field applied in the direction of motion

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C

Electric field applied perpendicular to the direction of motion

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D

Magnetic field applied perpendicular to the direction of motion

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Solution

The correct option is B
Magnetic field applied in the direction of motion

Electric field accelarates a stationary as well a moving charge. However, a magnetic field accelarates only a moving charge.

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