Calculate the work done to dissociate the system of three charges `(q=1.6 xx 10^-10C)` placed on the vertices of a triangle as shown in the fig

Calculate the potential at a point P due to a charge of 4xx10^-7 C located 9 cm away as shown in the figure.

Three charges each of value q are placed the corners of an equilaterla triangle. A fourth charge Q is placed at the centre of the triangle. For what value of Q, will the charges remain stationary? In this situation, how much work is done in removing the charges to infinity?

Three charges each of value q are placed the corers of an equilaterla triangle. A fourth charge Q is placed at the centre of the triangle. If Q = -q, will the charges at the corners move towards the centre or fly away from it?

When a glass rod is rubbed with silk cloth, it acquires a charge + 1.6 xx 10^-13 C , what is the charge on silk cloth?

Verify that (0, 7, 10) , (-1,6,6) and (-4, 9,6) are the vertices of a right angled triangle.