Question

Two charges of 6µC and 9µC are 2.5m apart. Where is the electric field along the line joining them equal to zero? show solutions

Answer 1

Explanation:

Answer

Let potential is zero at a distance x from 4μc

⇒

x

k(4)

+

(1−x)

k(−2)

=0

⇒

x

4

=

(1−x)

2

⇒2−2x=x

⇒2=3x

⇒x=

3

2

∴ from the distance is 1−

3

2

=

3

1

potential is zero at

3

1

m from −2μc.

Hence,

option (C) is correct answer.