Question

For a Van de Graaff generator to acquire a charge on its surface what must happen?

A. Positive and negative charges must be exactly equal in proportion to each other and remain so for a period of time.
B. An uncharged object must be placed nearby.
C. The metal surface must stay neutral for as long as possible.
D. Positive and negative charges must be separated inside the device and one type of charge must be carried upwards to the metal sphere.

Answer 1

The answer is D. A Van de Graaff generator is an electrostatic generator which utilizes a moving belt to aggregate an electric charge on an empty metal globe on the highest point of a protected section, making high electric possibilities. It delivers high voltage coordinate current (DC) power at low current levels.