MHT CET 2024 Physics question

The van de Graaff Generator not based on

(A)the phenomenon of Corona Discharge in X-ray tube.
(B)The application of electric field and magnetic field which are perpendicular to each otherCorrect
(C)The property that charge given to a hollow conductor is transferred to its outer surface and distributed uniformly over it.
(D)The fact that a charge is continuously supplied to an isolated metallic conductor, the potential of the conductor goes on increasing.

Answer: (B)

Solution

A van de Graaff generator sprays charge on a moving belt through sharp points (corona/point discharge), carries it into a hollow metal sphere, and the charge passes to the outer surface of the hollow conductor (charge on a conductor resides on its outer surface). Since charge keeps being added to the isolated

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Question ID VK-094821