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Charge 2q and -q are placed at (a,0) and...

Charge `2q and -q` are placed at `(a,0) and (-a, 0)` as shown in the figure. The coordinates of the point at which electric field intensity is zero will be `(x,0)` where

A

`-a lt x lt a`

B

`x lt -a`

C

`x gt -a`

D

`0 lt x lt a`

Text Solution

Verified by Experts

The correct Answer is:
B
For `-a lt x lt a , overlineE_(net)` is along `hat i`, For `x gt a , overline E` can't be zero as field of 2q will be greater
For `x, lt -a , overline (-E)` will be zero where field of 2q and -q cancel out.
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