Four point are placed at four comerse of a squared of side 4 m as shown. Match the following table.

Four point masses are placed at the corners of a square of side 2 m as shown in the figure. Find the centre of mass of the system w.r.t. the centre of square.

Four point charges are placed at the corners of a square ABCD of side 10 cm, as shown in figure. The force on a charge of 1muC placed at the centre of square is

Four identical point charges q are placed at four corners of a square of side a. Find the potential energy of the charge system. .

Four point charge are placed at the corners of a square with diagonal 2a as shown. What is the total electric field at the center of the squre?

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

Four point charges Q.q Q and q are placed at the corners of a square side 'a' as shown in the figures. Find the Potential energy of this system.

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 . (a) resultnat electric force on a charge Q and . (b) potential energy of this system.

Four point charges are placed at the corners of a square of side l. Calculate potential at the centre of square.