Two point charges of `2 xx 10^(-7)C` are 1.0 cm apart. What is the magnitude of the field produced by either charge at the side of the other?

Two point charge of 20muC and 80muC are placed 18cm apart .Find the position where the electric field is zero.

Two charges 5 xx 10^-8C and -3 xx 10^-8C are located 16 cm apart. At what point(s) on the line Joining the two charges is the electric potential zero? Take the potential at infinity to be zero.

Two point charges of +5 xx 10^(-19)C and +20 xx 10^(-19)C are separated by a distance of 2m. Find the point on the line joining them at which electric field is zero. (Find the position of null point)

Two point charge q_(A) = 3 muC and q_(B) = -3 muC are located 20 cm apart in vacuum. (a) What is the electric field at the mid point O of the line AB, joining the two charges. (b) If a negative test charge of magnitude 1.5 xx 10^(-9)C is placed at this point. What is the force experienced by the test charge?

Two fixed point charges +16 mu C and -9 mu C are placed 8 cm apart in air. Where should a third point charge be placed so that, the third charge is in equilibrium

Potential energy of a system of charges is directly proportional to the product of charges and inversely to the distance between them.Two point charges 3 x 10^(-8) C and - 2 x 10^(-8) C are separated by a distance of 15cm. At what point on the line joining the charges the potential is zero?

Two point charges q_1 and q_2 are separated by a distance r in space:-What happens to the force between the charges:-When the magnitude of the point charge Increases.

Two point charges q_1 and q_2 are separated by a distance r in space What happens to the force between the charges, i) When the magnitude of one of the point charges is doubled. ii) When the distance of separation is halved.