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

Question

Two point charges +q and +4q are located at x=0 and x=L respectively. The location of a point on the x- axis at which the net electric field due to these two points charges is zero, is (A)  L/3  (B)  2L  (C)  4L  (D)  8L

Tardigrade Admin · Accepted Answer

The location of a point on the x- axis, at which the net electric field due to these two point charges is zero, from +q1, charge is =(L/1+√(q2)q1)=(L/1+√(4q)q)=(L/3)

Q. Two point charges $+ q$ and $+ 4 q$ are located at $x = 0$ and $x = L$ respectively. The location of a point on the $x -$ axis at which the net electric field due to these two points charges is zero, is

$L /3$

$2 L$

$4 L$

$8 L$

The location of a point on the $x -$ axis, at which the net electric field due to these two point charges is zero, from $+ q_{1},$ charge is $= \frac{L}{1 + \frac{q _{2}}{q _{1}}} = \frac{L}{1 + \frac{4 q}{q}} = \frac{L}{3}$

Q. Two point charges +q and +4q are located at x=0 and x=L respectively. The location of a point on the x− axis at which the net electric field due to these two points charges is zero, is

L/3

2L

4L

8L