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Important Questions on Electric Potential
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JEE Main
IMPORTANT
A conducting sphere of radius has a charge. Then
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JEE Main
IMPORTANT
Consider two conducting spheres of radii and with , separated by large distance. If the two are at the same potential, the larger sphere has more charge than the smaller sphere, then, the charge density of the smaller sphere is more than that of the larger one.
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JEE Main
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Free electrons travel to region from a higher potential to a lower potential.
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JEE Main
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There may be a potential difference between two adjacent conductors carrying the same charge.
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JEE Main
IMPORTANT
A test charge is made to move in the electric field of a point charge along two different closed paths (see figure). First path has sections along and perpendicular to lines of electric field. Second path is a rectangular loop of the same area as the first loop. The work done in the first path is more than that of the second path.
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JEE Main
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A closed equipotential surface with no charge within itself must enclose an equipotential volume.
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JEE Main
IMPORTANT
If an insulated, uncharged conductor is placed near a charged conductor and no other conductors are present, the uncharged body must intermediate in potential between that of the charged body and that of infinity.
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JEE Main
IMPORTANT
Two charges, each, are separated by distance . A third charge is kept at the mid-point . Find potential energy of as a function of small distance from due to charges. Prove that the charge at is in an unstable equilibrium.
