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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

A

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

B

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

C

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

D

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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Knowledge Check

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

    A
    potential is zero at a point on the axis which is ` x//3` on the right side of the cahrge `-q//4`
    B
    potential is zero at a point on the axis which is `x//5` on the left side fo the charge `- Q//4`
    C
    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`
    D
    there exist two points on the axis where electric field is zero.

  • Two fixed charges -2 Q and Q are locatted at the points with coordinates ( -3 a, 0) and (+3 a, 0) prespectively in the X- Y plane . All the points in the X-Y plane where the electric potential due to the two charges is zero , line on a .

    A
    straight line
    B
    circle
    C
    parabola
    D
    ellipse

  • two point charges + 16 q and -4q located at x=0 and x=L respectively. the location of a point on the x-axis from x=0, at which the net electric field due to these two charges is zero is

    A
    L
    B
    2L
    C
    `L/2`
    D
    `L/4`
    • CENGAGE PHYSICS-COULOMB LAW AND ELECTRIC FIELD-Multiple Correct Answer Type
    1. When two point charges q(A) and q(B) are placed at some separation on...

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