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Electrostatic Induction - Questions and Answers

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16. In the phenomenon of ‘action of points’
A. air molecules are ionized
B. charge at sharp point increases
C. positive charges are produced
D. negative charges are produced
Explanation:
17. If on the ascending side of the belt of a Van de Graff generator is positive, then on the descending side of the belt, the charge is
A. again positive
B. negative
C. both positive and negative
D. zero
Explanation:
18. Electrophorous is a device used to produces
A. used to produce charges
B. used as a lightning arrester
C. used to produce high voltage
D. used to store energy
Explanation:
19. Van de Graff generator works on the principle of
A. discharge by action of points
B. charges given internally to a hollow conductor move to the outer surface
C. hollow spherical conductor stores charge proportional to radius at a given potential
D. all the above
Explanation:
20. A device used to produced high potential
A. lightning arrester
B. dynamo
C. electrophorus
D. Van de Graff generator
Explanation:
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