Question

Van de Graaff generators works on the principles of

• A. corona discharge or sharp point action
• B. net charge always resides on the outer surface of the conductor
• C. charged particle creates a magnetic field
• D. All of the above

Answer 1

Answer: (A), (B)

net charge always resides on the outer surface of the conductor

Van de Graaf generator works on the principle of static electricity which are

1) Corona discharge or sharp point action:

The corona discharge is a electric discharge that takes place in air or gas at pointed conductors radially.

2) Net charge always resides on the outer face of conductor:

If a hollow conductor is in contact with another conductor then the hollow conductor continuously accepts all the charge supplied by the other conductor irrespective of its growth in potential. This charge on the hollow conductor is transferred onto its surface and is uniformly distributed on it.

Hence, options (a) and (b) are the correct answers.