A charge Q is place at each of the opposite corners of a square. A charge q is placed at each of the other two corners. If the net electrical force on Q is zero, then `Q//q` equals:

A charges Q is placed at each of the two opposite corners of a square. A charge q is placed to each of the other two corners. If the resultant force on each charge q is zero, then

A charge Q is placed at each of the two opposite corners of a square of side a.A charge is placed at each of the other two corners. (a) if the reultant electrical force system of charges? What is the signification of its negative potential energy?

Two equal point charges Q=+sqrt(2) mu C are placed at each of the two opposite corners of a square and equal point charges q at each of the other two corners. What must be the value of q so that the resultant force on Q is zero?

A charge +q is fixed to each of three corners of a square .On the empty corner a charge Q is placed such that there is no net electrostatic force acting on the diagonally opposite charge then

A charge 'Q' is placed at each corner of a cube of side 'a'. The potential at the centre of the cube is

Four positive charges (2sqrt2-1)Q are arranged at the four corners of a square. Another charge q is placed at the center of the square. Resulting force acting on each corner charge is zero if q is

Two point charges +Q each are placed at adjacent corners of a square. Other two point charges -Q each are placed at the remaining two corners of the same square . The side of the square is l. Find electric field intensity at the centre of the square.