A charge of 75 C is brought from infinity to a given point in an electric field; when the amount of work done is 12.5 j.

When force applied on a body causes the body to move then the work is said to be done by the force.  Positive work done: when the body is displaced in...

Dipole moment of the system, p = q × dl = −10−7 C m Rate of increase of electric field per unit length, dE/dl=105 NC−1 Force (F) experienced by the system is given...

Work done = 10 Joule Charge = 2 Coulomb Potential of point A = VA = 10J/2C Given, work done = 20 Joule=5V Charge = 2 Coulomb Potential of point B = VB =20J/2C=10V Potential difference...

The correct answer is (c) CA > CB

The correct answer is (a) zero

The correct answer is (c) (d) (c) may increase if the charge is positive (d) may decrease if the charge is negative.

(d) The torque on the dipole due to the field may be zero.

The correct answer is (d) 1/r4.

At every point on equatorial axis, the potential is zero, so work done W = qΔV = 0(zero).

Δ U = q – w, closed system