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.

Assertion (A): Dielectric materials are insulators.Reason (R): Dielectric materials do not allow free movement of charges.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.

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

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 electric field inside a conductor in electrostatic equilibrium is zero.Reason (R): Charges inside a conductor move to the surface to minimize potential energy.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.

a) Both A and R are true and R is the correct explanation of Ab) Both A and R are true but R is NOT the correct explanation of A c) A is true but R is falsed) A is false and R is also false1. Assertion (A): The electrostatics force increases with decrease the distance between thecharges.Reason (R): The electrostatic force of attraction or repulsion between any two stationarypoint charges is inversely proportional to the square of the distance between them.2. Assertion (A): The Coulomb force between two points charges depend upon the dielectricconstant of the intervening medium.Reason(R): Coulomb’s force varies inversely with the dielectric constant of medium.3. Assertion(A): The charge given to a metallic sphere does not depend on whether it is hollowor solidReason(R): The charge resides only at the surface of conductor.4. Assertion (A): A comb run through one’s dry hair attracts small bits of paper.Reason(R): Molecules in the paper gets polarized by the charged comb resulting in net force ofattraction5. Assertion (A): A proton is placed in a uniform electric field, it tend to move along thedirection of electric field.Reason(R): A proton is placed in a uniform electric field it experiences a force.6. Assertion (A): Electric field at the surface of a charged conductor is always normal to thesurface at every point.Reason(R): Electric field gives the magnitude & direction of electric force ( ) experienced by anycharge placed at any point.