Two point charges `q_A=3muC` and `q_B=-3muC` are located 20 cm apart in vacuum.
If a negative test charge of magnitude `1.5 times10^(-9)C` is placed at the midpoint, what is the force experienced by the test charge ?

Two point charges q_A=3muC and q_B=-3muC are located 20 cm apart in vacuum. What is the electric field at the midpoint of the line AB joining the two charges ?

Two point charges +q and -q are placed d distance apart. What is the zero potential plane for them?

Two point charges q_1 and q_2 are such that q_1q_2 lt 0 . What is the nature of the force acting between the two charges?

Two point charges each of magnitude +q are placed at a distance r from each other. Draw the lines of force in this case.

Two point charges +4q and +q are placed 30 cm apart. The electric field intensity at a point on the line joining the two charges is zero. The point is situated at a distance

Two positive charges of magnitude 'q are placed at the ends of a side (side 1) of a square of side '2a'. Two negative charges of the same magnitude are kept at the other corners. Starting from rest, if a charge Q moves from the middle of side 1 to the centre of square, its kinetic energy at the centre of square is

Two point charges +10muC and -10muC are separated by a distance of 40 cm in air. How much work is required to separate the two charges infinitely away from each other?

Two charges q_1 and q_2 are placed in vacuum at a distance d and the force acting between them is F. If a medium of dielectric constant 4 is introduced around them, the force now will be