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Which of the following charges can not be present on an oil drop in Millikan's experiment?
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Important Questions on Electrostatics
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In nature, the electric charge of any system is always equal to
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Consider a neutral conducting sphere. A positive point charge is placed outside the sphere. The net charge on the sphere is then
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The force between two identical spheres charged with the same charge is . If charge of one sphere is transferred to the other sphere then the new force will be:
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Two-point charges placed at a distance in the air exert a force . Then distance at which they exert some force when placed in a certain medium (dielectric constant ) is:
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Two charges are placed as shown in figure. Where should a third charge be placed so that it remains at rest?
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Two-point charges and are kept apart. Where should a third charge be placed between them so that the system remains in equilibrium?
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Two balls carrying charges and attract each other with a force . If a charge is added to both, the force between them will be:
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Two equal and like charges when placed apart experience a repulsive force of . The magnitude of the charge in micro coloumb will be:
