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A charge + Q at A as shown in fig. produ...

A charge + Q at A as shown in fig. produces electric field E and electric potential V at D. if we now put charges -2 Q and + Q at B and C respectively , then the electric field and potential at D will be :

A

E and 0

B

0 and V

C

`sqrt(2) E and (V)/(sqrt(2))`

D

`(E)/(sqrt(2)) and (V)/(sqrt(2))`

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The correct Answer is:
A
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