ABCD is a square of side 10 cm. Charge s of `- 10` C and `+ 20` C are placed at A and B respectively and + 10 C at D .Find the electric field at C.

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 ?

ABCD is a square of side 4 cm. Charges of 16xx10^(-9) C, -16xx10^(-9) C and 32xx10^(-9)C are placed at the points A, C and D, respectively. Determine the electric field at point B.

ABCD is a square of side 20 cm positive charges of +2 * 10^-9 C. +4 * 10^-9 C and + 8 * 10^-9 C are placed at the corners A, B and C respectively. Calculate the work required to be done to transfer a unit positive charge from D to the point of intersection of the diagonals.

ABCD is a square of side 0.2 m. Charges of 2xx10^-9, 4xx10^-9, 8 xx 10^-9 coulomb are placed at the corners. A,B and C respectively. Calculate the work required to transfer a charge of 2xx10^-9 coulomb from corner D to the centre of the square.

ABCD is a square of side 0.2m . Charges of 2xx10^(-9) C, 4xx10^(9) C and 8xx10^(9) C are placed at the corners A, B and C respectively. Calculate work required to transfer a charge of 2xx10^(-9) C from corner D to centre of the square.

Two charges of 5 * 10^-6 C and -5 * 10^-6 C are placed 5 cm apart, at points A and B respectively. Find the electric field at C, 5 cm away from both A and B.

Three charges, each equal to 16 * 10^-9 C are placed at the three corners of a square of side 4 cm. Find the electric field at fourth corner.

ABCD is a square of side 0.2 M. Positive charges 2xx10^(-9)C,4xx10^(-9) C and 8xx10^(-9) C are placed at the points A,B and C. Calculate the work done to transfer one columb from D to the centre of the square.

The charges +5 mu C and +10 mu C are placed 20 cm apart. The electric field at the mid point between the two charges is