Question

Explain the principle ofva device that can build up high voltage of the ordercof few million volts

Answer 1

$\huge\mathfrak{Answer}$

• Van de graaf generator is the machine that can build up high voltages upto a few million volts and is used to accelerate charged particles to high energies.

• Working principle:

Consider a large spherical conducting shell of radius R with uniform charge density and total charge q.

Answer 2

The underlying principle of Van de graaf generator is that a charge given to a hollow conductor is transferred to outer surface and is distributed uniformly over it.