Four point charges `+2nC,-3nC,+4nC,-5nC` are placed at the vertices A,B,C,D of a square ABCD of side 0.2 m respectively. Calculate the electric field intensity at a point of intersection of the diagonals.

Point charges of 10nC,20nCand10nC are kept at the corners A,B C of a square ABCD of side 3m. Calculate the magnitude of the resultant electric intensity at D.

ABCD is a square of side 1m. Charges of +3nC, -5nC and +3nC are placed at the comers A, B and C respectively. Calculate the work done in transferring a charge of 12mu c from D to the point of intersection of the diagonals?

In vacuum, four charges each equal to q are placed at each of the four vertices of a square. Find the intensity and potential of the electric field at the point of intersection of two diagonals.

Two point charges of 6 nC and 12 nC are placed at the corners of B and C of an equilateral triangle ABC of side 0.03 m . Calculate the magnitude of the resultant electric intensity at the vertex A of triangle.

Three point charges +10nC,-15nC and +20nC are placed at the corners A,B and C respectively of a square, ABCD of side 0.1m. Calculate the amount of work done to transfer -100nC from the point 'D' to the point 'O'.

ABCD is a square of side 2m. Charges of 5nC, + 10nC and -5nC are placed at corners A,B and C respectively .What is the workdone in transferring a charge of 5nC from 'D' to the point of intersection of the diagonals ?

Two point charges +10nC and -10nC are separated by a distance of 0.02m. Calculate the electric field intensity at a point P on the axis of the dipole at 0.01 from +10nC .

Three point charges 3nC, 6nC and 9nC are placed at the corners of an equilateral triangle of side 0.1m. The potential energy of the system is:

Three point charges 3nC, 6nC and 6nC are placed at the corners of an equilateral triangle of side 0.1 m. The potential energy of the system is

Three point charges 3 nC , 6 nC and 9 nC are placed at the corners of an equilateral triangle of side 0.1 m . The potential energy of the system is