A bar magnet is quickly moved towards a conducting loop having a capacitor. Predict the polarity of the plates A and B of the capacitor.

Predict the polarity of the capacitor in the situation described below.

A parallel plate capacitor consists of two thin conducting plates each of area A held parallel to each other at a suitable distance d. insulating medium is generally filled between the plates. On introducing a non-conducting or insulating slab between the plates, the capacitance of the capacitor? a) decreases b) increases c) becomes zero d) nothing

Prove that if a conducting slab wholly fills the space between the plates, then the capacitance of a parallel plate capacitor is infinity.

A parallel plate capacitor of capacitance C is charged to a potential V. It is then connected to another uncharged capacitor having the same capacitance. Find out the ratio of the energy stored in the combined system to that stored initially in the single capacitor.

A parallel plate capacitor consists of two thin conducting plates each of area A held parallel to each other at a suitable distance d. insulating medium is generally filled between the plates. If a dielectric constant k is introduced between the plates of the capacitor, the capacitance of the capacitor becomes a) kε/A b) kε/d c) kεA/d d)∞

The question given below consist of an assertion (A) and a reason ( R). Use the following key to choose the appropriate answer to these questions from the codes (a), (b), ( c) and (d) given below: Both A and R are true and R is the correct explanation of A. Both A and R are true but R is NOT the correct explanation of A. A is true but R is false. A is false and R is also false. Assertion: The capacitance of a parallel plate capacitor decreases with the increase in distance between the plate of the capacitor. Reason:The capacitance of a parallel plate capacitor is C=(Aepsilon_0)/d .

Give the direction in which the induced current flows in the coil mounted on an insulated stand, when a bar magnet is quickly moved along the axis of the coil from one side to the other as shown in the figure.

A closed conducting loop moves normal to the electric field between the plates of a large capacitor. Is a current induced in the loop, when it is wholly inside the capacitor. The electric field is nromal to the plane of the loop.