Question

what is the force experienced by a charge when placed in sphere ​

Answer 1

When sphere A is touched with an uncharged sphere C, (q/2) amount of charge from A will transfer to sphere C. Hence, charge on each of the spheres, A and C, is (q/2). Hence, charge on each of the spheres, C and B, is (3q/4). Therefore, the force of attraction between the two spheres is 5.703 × 10−3 N.

Answer 2

When sphere A is touched with an uncharged sphere C, (q/2) amount of charge from A will transfer to sphere C. Hence, charge on each of the spheres, A and C, is (q/2). Hence, charge on each of the spheres, C and B, is (3q/4). Therefore, the force of attraction between the two spheres is 5.703 × 10−3 N.

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