Four points charges, each having a charge q are placed on the four corners. A,B,C and D of a regular pentagon. ABCDF. The distance of eadch corner for the centre is a. Find the electric field at the centre of the pentagon.

Five point charges, each having a charge q are placed on the five croners A,B,C, D and E of a regular hexagon ABCDEF having each side of length a. Find the electric field at the centre of the hexagon.

Three point charges, each having a charge +10 C are placed on the three cornes A, B and C of a square ABCD having each side of length sqrt8 m. Find the electric field at the centre of the square.

Five charges, q each, are placed at the corners of a regular pentagon of side a as shown in the figure. What will be the electric field at O, the centre of the pentagon? What will be the electric field at O, fi the charge from one of the corners (Say A) is removed? What will be the electric field at O, if the charge q at A is repalced by - q?

Three charges, each equal to q, are placed at the three corners of a square of side a. Find the electric field at the fourth corner of the square.

Four point charges are placed at the four corners of a square in the two ways as shown in the fig. Will the electric field at the centre of the square, be the same or different in the two configurations and why?

Four charges +q'+q' - q and -q are placed respe tively at the four croners A,B,C and D respectively of a square of side a . Calcualte the force on a charge Q placed at the centre of the square.

Three infinitely long charge sheets are placed as shown in the figure Find the electric field at the point P.

Four point charges Q, q, Q and q are placed at the corners of a square of side 'a' as shown in the figure. Find the resultant electric force on a charge Q?

A charge Q is placed at the corner of a cube. The electric flux through all the six faces of the cube is

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.