Q. 12 A4.0( 61 Votes )

# Two insulat

Given:

Distance between centres of spheres, r = 50 cm = .5m

Charge on each sphere, q = 6.5 × 10-7 C Mutual force of electrostatic repulsion …(1)

Where, F= mutual force of attraction

q1 = charge on sphere 1

q2 = charge on sphere 2

r = distance between centres Where, ε0 is the permittivity of the free space.

Now, putting the values of q1, q2 and r in equation (1). F = 1.52 × 10-2 N

Hence the mutual force between two spheres is 1.52 × 10-2N. Since the sign is positive so the force is repulsive in nature.

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