When two point charges q(A) and q(B) are...

When two point charges `q_(A)` and `q_(B)` are placed at some separation on positive x-axis at points `(x_(A), 0)` and `(x_(B), 0)`. Given that `|q_(A)|` and `|q_(B)|` and `x_(B) gt x_(A)`. If null point is the point where net electric field due to both the charges is zero, then

if both `q_(A)` and `q_(B)` are positive, null point lies at some point `x_(A) lt x lt x_(B)`

if `q_(A)` is positive and `q_(B)` is negative, null point lies at some point `x lt x_(A)`

if `q_(A)` is positive and `q_(B)` is negative, null point lies at some point `x gt x_(B)`

if `q_(A)` is negative and `q_(B)` is positive, null point lies at some point `x gt x_(B)`

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The correct Answer is:

A, C, D

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Two point charges Q and - Q //4 are separated by a distance X . Then .

potential is zero at a point on the axis which is ` x//3` on the right side of the cahrge `-q//4`

potential is zero at a point on the axis which is `x//5` on the left side fo the charge `- Q//4`

electric field is zero at a point on the axis which is at a distance `x` on the right side fo the charge `- Q//4`

there exist two points on the axis where electric field is zero.

straight line

circle

parabola

ellipse

`L/2`

`L/4`