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A point charge q moves from A to B along...

A point charge q moves from A to B along a parabolic(x2 =2ay) path (AB is latus rectum). Electric field is along x-axis. The work done by the field is

A

`-qEa`

B

`+qEa`

C

`-2qEa`

D

`2qEa`

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The correct Answer is:
D
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