Question

explain the working and principal of the device that will generator an electric charge of a very height potential?

Answer 1

Dear student

the device you are indicating is called Van de Graph generator

• it is electrostatic generator
• uses moving belt to accumulate charge
• accumulates charge on a hollow metal globe placed on the top of an insulated column
• as high as 20 million volts can be produced

principle

• electric discharge takes place in air at sharp pointed conductors
• If the charged conductor is brought in to internal contact with a hollow conductor, all of its charge transfers to the surface of the hollow conductor no matter how high the potential of the latter may be.

working

• the belt is connected to high tension source
• sharp pointed combs are installed to impart charges on the belt
• charges are carried to hollow metal globe and and given to it by sharp combs again
• thus more charges being stored on the globe, assumes high voltage

Regards