Question -
Answer -
Repulsive force of magnitude 6 ×10−3 N
Charge on the first sphere, q1 =2 × 10−7 C
Charge on the secondsphere, q2 = 3 × 10−7 C
Distance between thespheres, r = 30 cm = 0.3 m
Electrostatic force between thespheres is given by the relation,
Where, ∈0 =Permittivity of free space
Hence, force between the twosmall charged spheres is 6 × 10−3 N. The charges are of samenature. Hence, force between them will be repulsive.