LMS

The dielectric constant K of an insulator can be

The value of for various dielectric is always

A charge of 10^-10C between two parallel plates 1cm apart experiences a force of10-5N. The potential difference between the plates is

Let k denote 1/4π eo. The magnitude of the electric field at a distance r from an isolated point particle with charge q is:

The potential difference between two points is 100 V. If a particle with a charge of 2 C is transported from one of these points to the other, the magnitude of the work done is:

What is the charge stored on a 5mF capacitor charged to the potential difference of 12V?

A point charge at a distance ‘x’ from another point charge experiences a force of repulsion, which one of the following graph shows. How the force is related to ‘x’:

The Coulomb force between two charges q1 = 2C and q2 is 2N, the distance between charges is 3m. What is the charge of q2?

Electric lines of force about a negative point charge are

Two-point charges put in air has a force F. What is the force between the charges if distance between them is halved and a dielectric of relative primitively 4 is placed between the charges?

Two plates are 2cm apart. If a potential difference of 10 volts is applied between the plates. The electric field between the plates will be

Electrostatic force as compared to the gravitational force is

Two charges 1C and -4C exists in air. What is the direction of force?

Coulomb's Force is

The number of electrons in one coulomb charge is equal to

A charge of 0.10C accelerated through a potential difference of 1000V acquires kinetic energy

In a charged capacitor the energy resides in

If mica sheet is placed between the plates of a capacitor the capacity

Equal charges are given to two spheres of different radii. The potential will

The capacity of a parallel plate condenser is 5μF. When a glass plate is placed between the plates of the conductor, its potential becomes 1/8th of the original value. The value of dielectric constant will be

A capacitor having a capacity 2.0 micro farad is charged to 200 volts and then the plates of the capacitor are connected to a resistance wire. The heat produced in joules will be

An electric field due to a positive charge is represented by the diagram. At which of the following points is the electric field strongest in magnitude?

A uniform electric field is created by two parallel plates separated by a distance of 0.04 m. What is the magnitude of the electric field established between the plates?

An electric field is created by two parallel plates. Which of the following points corresponds to the higher electric potential?

A parallel plate capacitor has a capacitance Co. A second parallel plate capacitor has plates with twice the area and twice the separation of the first capacitor. The capacitance of the second capacitor is most nearly:

If a body has positive charge of 10-12coulomb:

If the force between two charges when placed in medium of air and then in oil, is 25N and 5N respectively, then the dielectric constant of the oil is.

A charge of 0.10 C accelerated through a potential difference of 1000V acquires K.E

A capacitor C “has a charge Q”. The actual charges on its plates are:

The electric field at a distance 3R/2 from the centre of a charged conducting spherical shell of radius R is E. The electric field at a distance R/2 from the centre of the sphere is.

To charge a 1.0 F capacitor with 2 C requires a potential difference of:

When a dielectric material is introduced between the plates of a charged capacitor, then electric field between the plates:

If a charge on a capacitor is doubled, then its capacitance will be

What is the magnitude of a point charge which produces an electric field of 2 N/C at a distance of 60 cm?

A parallel plates capacitor is charged and the charging battery is then disconnected. If the plates of the capacitor are now moved farther by means of insulted handles, then

If a 10C charge exerts 10N force on a 5C charge then 5C charge will exert_________ force on the 10C charge

If 4 × 10²⁰ eV of energy in required to move a charge of 1C between two points, the P. D between the points is

Potential due to charge q at distance 1m is 5V, at distance 3m will be

Capacitance with air is 10F, if a dielectric of r = 100 is inserted then new capacitance

A isolated charged point particle produces am electric field with magnitude E at a point 2m away. At point 1 m from the particle, the magnitude of the field is

The electric intensity due to two oppositely charged plates is ________ times due to a single plate.

In bringing an electron towards the second electron the electrostatic potential of the system

The energy required to charge a capacitor of 5F by connecting D.C. source of 20 V is

A gold nucleus (radius r) is represented by the symbol taking as the elementary charge. What is the electric field strength at the surface of an isolated gold nucleus?

A force of 0.01 N is exerted on a charge of 1.2 × 10^-5 C. at a certain point. The electric field at that point is

A and B are two spherical conductors of the same extent and size. A is solid and B is hollow Both are charged to the same potential. If the charges on A and B are Q_A and Q_B respectively, then

Neutral zone in electric field of two similar charges is region where

The electric field acting on the charge is

Capacitor is a device used for

Which of the following remains unchanged if a dielectric is placed between a charged capacitor?