Question

Two point charges +4microC and -6microC are separated by a distance of 20 cm in air.At what point the the line joining the two charges is electric field zero.​

Answer 1

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.

Answer 2

Explanation:

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