Electrostatics · Physics · Class 12

An electric dipole of length $$2 \mathrm{~cm}$$ is placed at an angle of $$30^{\circ}$$ with an electric field $$2 \times 10^5 \mathrm{~N} / \mathrm{C...

The magnitude of the electric field due to a point charge object at a distance of $$4.0 \mathrm{~m}$$ is $$9 \frac{\mathrm{N}}{\mathrm{C}}$$. From the...

A point $$P$$ lies at a distance $$x$$ from the mid point of an electric dipole on its axis. The electric potential at point $$\mathrm{P}$$ is proport...

Beams of electrons and protons move parallel to each other in the same direction. They

Assertion (A) : Work done in moving a charge around a closed path, in an electric field is always zero. Reason (R) : Electrostatic force is a conserva...

A negatively charged object X is repelled by another charged object Y. However an object Z is attracted to object Y. Which of the following is the mos...

In an experiment three microscopic latex spheres are sprayed into a chamber and became charged with charges +3e, +5e and $$-$$3e respectively. All the...

An object has charge of 1 C and gains 5.0 $$\times$$ 1018 electrons. The net charge on the object becomes -

The electric potential V at any point (x, y, z) is given by V = 3x2 where x is in metres and V in volts. The electric field at the point (1 m, 0, 2m) ...

Which of the diagrams correctly represents the electric field between two charged plates if a neutral conductor is placed in between the plates?

The magnitude of electric field due to a point charge 2q, at distance r is E. Then the magnitude of electric field due to a uniformly charged thin sph...

A square sheet of side 'a' is lying parallel to XY plate at z = a. The electric field in the region is $$\overrightarrow E = c{z^2}\widehat k$$. The ...

Three charges q, $$-$$q and q0 are placed as shown in figure. The magnitude of the net force on the charge q0 at point O is $$\left[ {k = {1 \over {(4...

A + 3.0 nC charge Q is initially at rest at a distance of r1 = 10 cm from a + 5.0 nC charge q fixed at the origin. The charge Q is moved away from q t...

Four objects W, X, Y and Z, each with charge +q are held fixed at four points of a square of side d as shown in the figure. Objects X and Z are on the...

Two charges 14 $$\mu$$C and $$-$$4 $$\mu$$C are placed at ($$-$$12 cm, 0, 0) and (12 cm, 0, 0) in an external electric field $$E = \left( {{B \over {{...

Assertion (A) : A negative charge in an electric field moves along the direction of the electric field.Reason (R) : On a negative charge a force acts ...

Equipotentials at a large distance from a collection of charges whose total sum is not zero are -

Four charges $$-$$q, $$-$$q, +q and +q are placed at the corners of a square of side 2 L is shown in figure. The electric potential at point A midway ...

Depict the orientation of an electric dipole in (a) stable and (b) unstable equilibrium in an external uniform electric field. Write the potential ene...

(a) (i) Use Gauss' law to obtain an expression for the electric field due to an infinitely long thin straight wire with uniform linear charge density ...