Two point charges each of `3xx10^-9` C located at the two vertces of an equilatera triangle of side 20 cm. How much work must be done to bring a charge of `10^-9` C upto the thrid corner of the triangle from infinity?

Three point charges of +2muC ,-3muC and -3muC are kept at the vertices A, B and C respectivel of an equilaterla triangle of side 20 cm. What should be the sign and magnitude of the charge to be placed at the mid-point M of side BC, so that the charge at A remains in equilibrium?

A 500 mu C charge is at the centre of a square of side 10 cm. find the work done in moving the charge of 10 mu C between two diagonally opposite points on the square.

Three charges of +0.1 C each are placed at the vertices of an equilateral triangle of each side 1m. If the energy is supplied at the rate of 1.0 kw, how many hours would be required to move one of the charges on to the mid point of the line joining the other two? Given =1/(4piepsilon_0) = 9xx 10^9 N ^2C^-2

Three equal charges, each haing a charge of +2xx10^-6C are placed at the three corners of a right angled triangle of sides 3 cm, 4 cm and 5 cm. Find the force on the charge at the right -angled corner.

How much work is done to carry 2 c of charge between two points having potential difference of 12V?

100 joule of work must be done to move a charge of -200 C from the point A to point B. What is the potential difference.?

A charge of +1 C is placed at the centre of a spherical shell of radius 10 cm. what will be the work done in moving a charge of +1muC on its surface through a distance of 5 cm?

How much work is done in moving a charge of 5C between two points in a circuit having a potential difference of 10 V?

Four point charges q_A = 2 muC , q_B = -5 muC . q_c = 2 muC , and q_D = -5 muC are located at the corners of a square ABCD of side 10 cm. What is the force on a charge of 1 muC placed at the centre of the square?