#1 | Introduction & Methods of Charging
(Physics) > Electric Charges and Fields
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Related Practice Questions :

A particle of mass m and charge q is at rest. If it is moved with velocity 3c2 where c is speed of light in vacuum, then its charge will become/remain

(1) 2q

(2) 3q

(3) q2

(4) q

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When 1019 electrons are removed from a neutral metal plate, the electric charge on it is 

(1) –1.6 C

(2) +1.6 C

(3) 10+19 C

(4) 10–19 C

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A table tennis ball that has been covered with conducting paint is suspended by a silk thread so that it hangs between two plates, out of which one is earthed and other is connected to a high voltage generator. This ball

(1) Is attracted towards high voltage plate and stays there

(2) Hangs without moving

(3) Swing backward and forward hitting each plate in turn

(4) Is attracted to the earthed plate and stays there

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