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Two positive charges of magnitude q are ...

Two positive charges of magnitude q are placed at the ends of a side AB of square of side 2a. Two negative charges of the same magnitude are kept at the other corners. Starting from rest, if a charge Q moves from the middle of side AB to the centre of square, its kinetic energy at the centre of square is :

A

zero

B

`1/(4pi epsi_(0)) (2qQ)/a (1+1/sqrt(5))`

C

`1/(4pi epsi_(0)) (2qQ)/a (1-2/sqrt(5))`

D

`1/(4pi epsi_(0)) (2qQ)/a (1-1/sqrt(5))`

Text Solution

Verified by Experts

The correct Answer is:
D
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