Question 467: Electrostats & Capacitance

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 1m.
The ratio of net force on a charged ball to the force between any two charged balls will be :

Accepted Answer

F
net
on charge 3, $${F_1} = {{\sqrt 3 k{q^2}} \over {{1^2}}}$$
Force between any 2 charges
$${F_2} = {{k{q^2}} \over {{1^2}}}$$
So, $${{{F_1}} \over {{F_2}}} = \sqrt 3 $$

Answer

1 : 1

Answer

1 : 4

Answer

$$\sqrt3$$ : 2

Answer

$$\sqrt3$$ : 1

Electrostats & Capacitance

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 1m. The ratio of net force on a charged ball to the force between any two charged balls will be :

Choose the correct answer: