Time Left - 30:00 mins

Revision Quiz on Electrostatics

Attempt now to get your rank among 523 students!

Question 1

A physicist teaches his student electrostatic and ask a question at the end of the session that if two hollow concentric spheres, S1 and S2, enclosing charges 4Q and 8Q respectively as shown in the figure.
(i) Find out the ratio of the electric flux through them. (ii) How will the electric flux through the sphere S1 change if a medium of dielectric constant 'εr' is introduced in the space inside S1 in place of air?

Question 2

A uniformly charged solid sphere of radius R has potential V0 (measured with respect to ∞) on its surface. For this sphere that equipotential surfaces with potentials have radius R1, R2, R3 and R4 respectively. Then

Question 3

Direction: Select the correct option using below statement.
A parallel plate capacitor with plates of width and length. The separation between the plates is and connected to a battery of 40 V. A dielectric slab same thickness d and dielectric constant k=5 is slowly inserted between the plates.

Calculate the energy of the system when dielectric slab is introduced into s = 1 cm in the capacitor.

Question 4

Direction: Select the correct option using below statement.
A parallel plate capacitor with plates of width and length . The separation between the plates is and connected to a battery of 40 V. A dielectric slab same thickness d and dielectric constant k=5 is slowly inserted between the plates.

Calculate the energy of the system when the dielectric slab is fully inserted in between the plates.

Question 5

There are two thin wire rings, each of radius R as shown in the figure. The charges on the rings are q and –q. Find the potential difference between the center of the rings separated by a distance a.

Question 6

We have a conducting spherical shell having some thickness as shown in the figure. The outer radius is R and the inner radius is r. The sphere have charge Q. We somehow manage to give a velocity to the charge q having mass m inside the sphere. What will be the value of that velocity such that the charge escapes from the electric field of the hollow sphere?

Question 7

Three equal charges Q are successively brought from infinity and each is placed at one of the three vertices of an equilateral triangle has side length a. Assuming the rest of the universe as whole to be neutral, the energy E of the electrostatic field will increase successively to. Then find the ratio of

Question 8

A parallel plate capacitor having area of plates distance between the plates is d charging with battery of voltage V. And then disconnected the separation is now doubled then how much work is done in this process?

Question 9

A battery of potential V is used to charge a capacitor. After charged capacitor is disconnected and space between the plates is doubled and reconnected the same battery. Then

Question 10

A parallel-plate capacitor of capacitance is connected to a power supply of 200V. A dielectric slab of dielectric constant 8, is now inserted into the gap between the plates. What will be the ratio electrostatic energy of the capacitor?

Question 11

A conducting bubble of radius 3 cm has a potential 5 V. The thickness of the bubble which is very small as compared to its radius is given as 0.001 cm. The bubble later on collapses into a droplet. What will be the potential of the droplet?

Question 12

A parallel plate capacitor having plate separation 1.5 mm, area of plates is 100 cm2 holds a charge of 0.15 µC, when connected to a 100 V battery. What is the value of dielectric constant of material between the plates?

Question 13

Two charges are placed in a line at a distance d. If a another charge placed in the midpoint of the both charge then the electrostatic potential energy of the system will be

Question 14

A parallel plate capacitor has area. Charge on the capacitor is 4 C. Then find the amount of work to be performed to slowly increase the distance between plates from a to b.

Question 15

The space between a parallel plate capacitor is divided equally in three parts and filled with dielectric. The area of plate and distance between the plates isrespectively. Then what will be its new capacitance.
  • 523 attempts
  • 6 upvotes
  • 8 comments

Tags :

Feb 25JEE & BITSAT