EASY
12th CBSE
IMPORTANT
Earn 100

A parallel plate capacitor of capacitance C is charged to a potential V by a battery. Without disconnecting the battery, the distance between the plates is tripled and a dielectric medium of k=10 is introduced between the plates of the capacitor. Explain giving reasons, how will the following be affected charge on the capacitor.

Important Questions on Electrostatic Potential and Capacitance

EASY
12th CBSE
IMPORTANT
A parallel plate capacitor of capacitance C is charged to a potential V by a battery. Without disconnecting the battery, the distance between the plates is tripled and a dielectric medium of k=10 is introduced between the plates of the capacitor. Explain giving reasons, how will the following be affected energy density of the capacitor.
EASY
12th CBSE
IMPORTANT

The electric field inside a parallel plate capacitor is E. Find the amount of work done in moving a charge q over a closed rectangular loop a b c d a.

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EASY
12th CBSE
IMPORTANT

Figure below shows the variation of electrostatic potential V with distance 'x' for a given charge distribution. From the points marked A, B and C, identically the point at which the electric field is zero. Explain your answer.

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EASY
12th CBSE
IMPORTANT

Figure below shows the variation of electrostatic potential V with distance 'x' for a given charge distribution. From the points marked A, B and C, identically the point at which the electric field is maximum. Explain your answer.

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EASY
12th CBSE
IMPORTANT

Two identical plane metallic surfaces A and B are kept parallel to each other in air, separated by a distance of 1 cm, as shown in figure below.

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Surface A is given a positive potential of 10 V, and the outer surface of B is earthed.

What is the magnitude and direction of the uniform electric field between points Y and Z?

EASY
12th CBSE
IMPORTANT

Two identical plane metallic surfaces A and B are kept parallel to each other in air, separated by a distance of 1 cm, as shown in figure below.

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Surface A is given a positive potential of 10 V, and the outer surface of B is earthed.

What is the work done in moving a charge of 20 µC from point X to point Y.

EASY
12th CBSE
IMPORTANT

The electric potential as a function of distance x is shown in Figure below. Construct a graph of the electric field strength E.

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EASY
12th CBSE
IMPORTANT

The two graphs drawn here, show the variation of electrostatic potential V with 1r(r being distance of the field point charge) for two point charges q1 and q2. What are the signs of the two charges?

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