Two charges of value `2muC` and `-50muC` are placed at in distance 80cm` apart. Calculate the

Two charges of values 2 muC and -50 muC are placed at a distance of 6 cm from each other. The distance of the point (in cm) from the bigger charge where the electric intensity will be zero is :

Two positive point charges of 0.2 muC and 0.01 muC are placed 10 cm apart. Calculate the work done in reducing the distance to 5 cm.

Two charges of 5muC and 20muC are placed 20 cm apart. Calculate the work done in bringing the charges closer to 15 cm apart.

Point charges of 9 muC and -6muC are placed at a distance of 90 cm from each other. How many points can you find on line joining the charges where electric potential is zero? At what distance these these points are located from 9 muC ?

Two charges +2muC and -2muC are placed at points A and B, 5 cm apart. Depict an equipotential surface of the system.

Two point charges of +10muC and +20muC are placed in free space 2 cm apart. Find the electric potential at the middle point of the line joining the two charges.