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Work done on an electron moving in a sol...


Work done on an electron moving in a solenoid along its axis is equal to

A

zero

B

`-evB`

C

`i//B`

D

none of the above

Text Solution

Verified by Experts

The correct Answer is:
A

`vec(B) = mu_(0)ni hat(i), v = v hat(i)`
`F = (-e)(vec(v) xx vec(B)) = 0`
`W = 0`
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