Two charges `60xx10^(-9)C` and `-30xx10^(-9)C` are located 100mm apart. At what point on the line joining the two charges is the electric potential zero? (Taking the potential at infinity to be zero)

Two point charges of +3 *10^-19C and +2 * 10^-19 C are separated by a distance of 2.5m. Find the point on the line joining them at which electric intensity is zero.

Two point charge +16muC and -9muC are placed at 8 cm apart in air. Determine the position of the point at which the resultant electric field is zero.

Two charges of 5 * 10^-6 C and -5 * 10^-6 C are placed 5 cm apart, at points A and B respectively. Find the electric field at C, 5 cm away from both A and B.

As you have learnt in the text, a geostationary satellite orbits the earth at a height of nearly 36,000 km from the surface of the earth. What is the potential due to earth’s gravity at the site of this satellite? (Take the potential energy at infinity to be zero). Mass of the earth = 6.0 xx 10^24 kg, radius = 6400 km

How much work is done in moving a charge of 4C across two points having a potential difference 24V?

Two heavy spheres each of mass 100 kg and radius 0.10 m are placed 1.0 m apart on a horizontal table. What is the gravitational force and potential at the mid point of the line joining the centers of the spheres? Is an object placed at that point in equilibrium? If so, is the equilibrium stable or unstable?

Two point charges 0.01muC and -0.01muC are place 10 cm apart in vacuum. Calculated the magnitude of electric field intensity at the middle point of the line joining the charges and mention its direction.