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Four point charge q, - q, 2Q and Q are p...

Four point charge `q, - q, 2Q` and Q are placed in order at the corners A, B, C and D of a square. If the field at the midpoint of CD is zero then the value of `q//Q` is `(5 sqrt5)/(x)`. Find the value of x.

A

1

B

2

C

`( 2 sqrt(2))/( 5)`

D

`( 5 sqrt( 5))/( 2)`

Text Solution

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The correct Answer is:
D
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