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A point charged q placed at (3a, 0) and ...

A point charged q placed at `(3a, 0)` and another charge `-2q` is placed `(-3a, 0)`
At how many points on the x-axis, (at finite distance) electric potential will be zero ?

A

1

B

2

C

3

D

4

Text Solution

Verified by Experts

The correct Answer is:
B
Let the poyential will be zero at x distance from `-2q`

`:. (Kx-2q)/x+(Kq)/((6a-x))=0 :. x=4a`
`(Kx-2q)/x+(Kq)/(6a+x)=0rArr x=-12a`
OR
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