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A homogeneous electric field E and a uni...

A homogeneous electric field `E` and a uniform magnetic field `vecB` are pointing in the same direction. A proton is projected with its velocity parallel to `vecE`. It will

A

Go on moving in the same direction with increasing velocity

B

Go on moving in the same direction with constant velocity

C

Turn to its right

D

Turn to its left

Text Solution

Verified by Experts

The correct Answer is:
A
`vecF_(B) = 0` ,but `vecF_(E) ne 0` , so velocity increases.
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