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JEE PHYSICS MCQ: ELECTRIC POTENTIAL AND CAPACITANCE

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Statement-1: Work done by electrostatic force is zero if a charge is moving along an equipotential surface.
Statement-2: Equipotential surfaces are perpendicular to electric field.

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Correct option: D

Both statements are true

Option D (Both statements are true) is correct because electrostatic force does no work on a charge moving along an equipotential surface, and equipotential surfaces are always perpendicular to the electric field.

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The potential at a point distance

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\mu \mathrm{m}

) due to some charges situated on the

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V(x)=\frac{20}{x^2-5} \mathrm{V}

. The electric field at

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Q

. The electric potential and the electric field at the centre of the sphere respectively are Two capacitors when connected in series have a capacitance of

3\mu F,\,

and when connected in parallel have a capacitance of

16\mu F

. Their individual capacities are Statement-1: If temperature is increased, the dielectric constant of a polar dielectric decreases whereas that of a non-polar dielectric does not change significantly.
Statement-2: The magniude of dipole moment of individual polar molecule decreases significantly with increase in temperature. An electric dipole when placed in a uniform electric field

E

will have minimum potential energy, if the positive direction of dipole moment makes the following angle with

E