electric field

Question

3. Two insulated charged spheres of charges 6.5 × 10−7 C each are separated by a distance of 0.5m. Calculate the electrostatic force between them. Also calculate the force (i) when the charges are doubled and the distance of separation is halved. (ii) When the charges are placed in a dielectric medium water (εr = 80).

Answer 1

(a) If each sphere is charged double and the distance between them is halved

b) the two spheres are placed in water of dielectric constant 80 i.e, k=80