Three identical charged balls each of charge $2 C$ are suspended from a common point $P$ by silk threads of $2 m$ each (as shown in figure). They form an equilateral triangle of side $1 m$ .
The ratio of net force on a charged ball to the force between any two charged balls will be

Question

Three identical charged balls each of charge $2 C$ are suspended from a common point $P$ by silk threads of $2 m$ each (as shown in figure). They form an equilateral triangle of side $1 m$ .

The ratio of net force on a charged ball to the force between any two charged balls will be

Aicharya · Accepted Answer

We have force between any two charge &#160; F 1 = F 2 = q 2 4 &#960; &#949; 0 l 2 = F Resultant electrostatics force F R = F 1 2 + F 2 2 + 2 F 1 F 2 cos 60 &#176; = F 2 + F 2 + 2 F 2 &#215; 1 2 = 3 F 2 So, the ratio of net force on a charged ball to the force between any charged balls is &#8658; F R F = 3

Three identical charged balls each of charge 2 C are suspended from a common point P by silk threads of 2…

Solution