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A proton enters a magnetic field with ve...

A proton enters a magnetic field with velocity parallel to the magnetic field. The nature of the path followed by the proton will be:

A

straight line

B

circle

C

helix

D

parabola

Text Solution

Verified by Experts

The correct Answer is:
A
`vec F = q ( vec v xx vec B)` where `vec v` parallel to `vec B` then `vec F = 0.`
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