Four charges of `+ 2 xx10^-9c, +,1 xx 10^-9c,-2xx10^-9c and + 3 xx10^-9c` are kept at the four vertices of a square of sides `sqrt2 m`. What is the potential at its centre?

Charges +2 xx 10^(-7)C, -4 xx 10^(-7)C and +8 xx 10^(-7)C are placed at the vertices of an equilateral triangle of side 10 cm in air. Determine the electrical potential energy of this system of charges.

A square of side 20 cm is enclosed within a sphere of radius 80 cm . Centres of the sphere and the square coincide at a common point . There are four charges of 2xx10 ^(-6 ) C. -5xx 10 ^(-6 ) , C .-3xx 10 ^(-6 ) C and 6xx10 ^(-6) C at the four corners of the square . the electric flux passing through the surface of the sphere in N .m ^(2) //C.

At the three vertices of an equilateral triangle of side 10 cm, +1.0 xx 10^(-7)C, +2.0 xx 10^(-7)C and -4.0 xx 10^(-7)C charges are placed. Calculated the potential energy of the system of these charges.

An electron of mass 8.9 xx 10^(-28)g and charge 4.8 xx 10^(-10) esu starts from rest and acquires a velocity of 10^(9) cm cdot s^(-1) at another point. What is the potential difference in volt between the two points?

Two point charge q_(1) = 10 xx 10^(-8)C and q_(2) = -2 xx 10^(-8)C are separated by a distance of 6 cm in air. (ii) The electrostatic potential energy of the system is

The capacitance of a conducting sphere is 10muF . It is charged with -2xx10^(-6)C . What is its potential in air?

Two point charge q_(1) = 10 xx 10^(-8)C and q_(2) = -2 xx 10^(-8)C are separated by a distance of 6 cm in air. (i) The distance from q_(1) of the point of zero electric potential is

Two metallic spheres of radii 1cm and 3 cm are given charges of -1xx10^-2C and 5xx10^-2C . Respectively. If these are connected by a conducting wire, the final charge on the bigger sphere is

Two charges 2.0xx10^(-6)C and 1.0xx10^(-6)C are placed at a separation of 10 cm. Where should a third charge be placed such that it experiences no net force due to these charges?

Charges of 10^(-2)C " and " 5xx 10^(-2)C are put on two metal spheres of radii 1 cm and 2 cm respectively. If they are connected with a metal wire, what will be the final charge on the smaller sphere ?