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JEE PHYSICS MCQ: ELECTRIC POTENTIAL AND CAPACITANCE

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Statement-1: When a battery is supplying power to a circuit, work done by electrostatic forces or electrolyte ions inside the battery is positive
Statement-2: Electric field is directed from positive to negative electrode inside a battery.

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Correct option: D

Statement-1 is false, Statement-2 is true

Option D is correct because when a battery supplies power, the electrostatic force does negative work on positive charges moving from the negative to the positive terminal, and the electric field inside a battery is directed from the positive to the negative electrode.

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The potential at a point distance

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\mu \mathrm{m}

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

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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

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E