A capacitor is charged to a potential difference 𝑉V. If the dielectric constant 𝐾K of the dielectric material inserted between the plates is 4, the new potential difference across the plates is:a) 𝑉44V​ b) 4𝑉4Vc) 𝑉22V​ d) 𝑉V

The potential difference across the plates of a capacitor is 200 V and the charge stored is 4 µC. The capacitance is:a) 20 µFb) 2 µFc) 0.02 µFd) 0.2 µF

A parallel plate capacitor is charged by a battery after charging the capacitor, the battery is disconnected and if a dielectric plate is inserted between the plates, then which one of the following statements is not correctincrease in the stored energydecrease in the potential differencedecrease in the electric fieldincrease in the capacitance

Assertion (A): The capacitance of a capacitor increases with the insertion of a dielectric material.Reason (R): Dielectric materials increase the potential difference between the plates.a) Both A and R are true, and R is the correct explanation of A.b) Both A and R are true, but R is not the correct explanation of A.c) A is true, but R is false.d) A is false, but R is true.

n a spherical capacitor with plate radii a & b, the potential difference between the plates is V. The electric field between the plates at a radial distance r from centre isChoose answer:

A capacitor of capacitance 20 µF is charged to a potential difference of 500 V. The charge stored in the capacitor is:a) 1000 µCb) 10000 µCc) 0.1 Cd) 10 C