Question

The electrostatic force on a small sphere of charge 0.4 uC due to another small sphere of charge
-0.8 uC in air is 0.2 N.
(a) What is the distance between the two spheres ?
(b) What is the force on the second sphere due to the first ?​

Answer 1

Answer:

solved

Explanation:

a) f = k q1q2/d²

d = √kq1q2/f = √0.32x10∧-12/9x10∧9 = √320/3 = 8√5/3 m.

(b) What is the force on the second sphere due to the first = 0.2 N.

Answer 2

B:-

(b) Both the charged spheres being oppositely

charged apply attractive electric force on each

other. The forces applied by the spheres on

each other are equal in magnitude. Therefore,

the first sphere attracts the second sphere

with a force of 0.2 N.