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What is the order of potential difference built up by the Van de Graff generator?

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What is the order of potential difference built up by the Van de Graff generator?

(a) Potential difference of the order of hundreds

(b) Potential difference of the order of several million volts

(c) Potential difference of the order of thousands

(d) Potential difference of the order of tens

The question was asked in an interview.

This key question is from Van de Graff Generator in division Electrostatic Potential and Capacitance of Physics – Class 12

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Right choice is (b) Potential difference of the order of several million volts

The explanation is: A Van de Graff generator, by means of a moving belt and suitable brushes, transfers charge continuously to a large spherical conducting shell. As a result, a potential difference of the order of several million volts is built up and this can be used for accelerating charged particles.

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