Four charges are arranged at the corners of a square ABCD as shown in the figure. The force on the charge kept at the ccentre O is

Four charges are arranged at the corners of a square ABCD as shown in the figure. The force on the charge kept at the centre O will be:

Four charges are arranged at the corners of a square ABCD, as shown. The force on a positive charge kept at the centre of the square is

Four charges are arranged at the corners of a square ABCD , as shown. The force on a =ve charge kept at the centre of the square is -

Four charges are arranged at the corners of a square ABCD , as shown in the adjoining figure, The force on a positive charge kept at the centre O is

Four charges are arranged at the corners of a square as shown in the figure. The direction of electric field at the centre of the square is along

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 charges are arranged at the corners of a square ABCD pf side d, as shown in Fig. Find the work required to put together this arrangement (b) A charge q_(0) brought to the center E of the square, the four charges being held fixed at the corners . How much extra work in needed to do this ?

Four charges are placed at four corners of a square as shown in figure. The side of the square is a. Two charges are positive and two are negative, but their magnitudes are the same. Now, an external agent starts decreasing all the sides of the square slowly and at the same rate. What happens to the electrical potential energy of the system and what will be the nature of work done by the agent?

Four identical charges +Q are kept at the corners of a square ABCD. The edge length of square is a . Find net force on the charge kept at C due to the other three charges.