Question

Metal sphere A is charged negatively and then brought near an uncharged metal sphere B (Figure 14.78). Both spheres rest on insulating supports, and the humidity is very low.

(a) Use +’s and −’s to show the approximate distribution of charges on the two spheres. (Hint: Think hard about both spheres, not just B.)

Short answer

a) Sphere B will get about $+S$of a negative charge, and sphere A will have about of negative charge.

b) Due to the charge distribution from sphere A to sphere B, the ball is moving towards sphere B, and as sphere B is producing an equal and opposite force on sphere A, the ball is moving to sphere A with this. Finally, when both the spheres are of equal charge, the ball stops moving as there is no charge distribution.

Step-by-step solution

Identification of the given data

The given data can be listed below as follows,

• The metal sphere A is negatively charged.

• The metal sphere B is uncharged.

• The ball has swung for.

Significance of the induction charging

Charging by induction illustrates that an uncharged particle gets charged if it is kept beside the charged particle.

Also, induction charging is described as a process in which an object can be changed without touching it.