Question

A positively charged balloon is brought near a neutral conducting sphere as shown below. While
the balloon is near, the sphere is touched with a finger. At this point, there is a movement of
electrons. Electrons move
(a) from the sphere to the ground
(b) from the balloon to the sphere.
(c) from ground to balloon through the
sphere
(d) from balloon to ground through the sphere.
9
1.​

Answer 1

Answer:

d) from balloon to ground through the sphere.

Answer 2

The correct option is (b).

• Here, charging of the neutral conducting sphere happened through induction.
• When the positively charged balloon is brought near the conducting sphere, there is the distribution of charge in the sphere.
• The positively charged balloon receives electrons from the sphere. Now, the balloon is negatively charged.
• The side of the sphere which is near to the balloon generated the opposite charge i.e negative while the adjacent side induce a positive charge.

Henceforth, electrons move from the balloon to the conducting sphere.