Question

define charging by induction with example and earthing

Answer 1

There are several things to note about this example of induction charging. First, observe .... shown below. While the balloon is near, the sphere is touched (grounded). ... v. Explain in terms of electron movement what is happening in each step.

Answer 2

Induction charging is a method used to charge an object without actually touching the object to any other charged object. An understanding of charging by induction requires an understanding of the nature of a conductor and an understanding of the polarization process. If you are not already comfortable with these topics, you might want to familiarize yourself them prior to reading further.
Example:- One way to carry out the four-step process:

1) Bring the charged object close to, but not touching, the conductor. Charge on the conductor shifts in response to the nearby charged object.

2) Connect the conductor to ground. Ground is basically a charge reservoir - anything that can give up or receive charge without noticing the change. Electrons flow from ground to the conductor if the charged object is positive, and the opposite way if the object is negative. The conductor now has a net charge with a sign opposite to the sign on the charged object.

3) Remove the ground connection. The transferred electrons can't get back to where they came from.

4) Remove the charged object. The net charge distributes itself over the surface of the conductor.

Earthing :- connect (an electrical device) with the ground.