Figure represents a square carrying changes `+q,+q,-q,-q` at its four corners as shown. Then the potential will be zero at points

Figure represents a square carrying charges +q,+q,-q,-q at its four corners as shown. Then the potential will be zero at points

Four charges Q-Q, Q-Q are placed at the corners of a square as shown . The potential is zero at points

Four electric charges +q, +q, -q and -q are placed at corners of a square of side 2L.(see figure).The electric potential at point A, midway between the two charges +q and +q 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 identical point charges q are placed at four corners of a square of side a. Find the potential energy of the charge system. .

Four charges, each of value q, are placed at the four corners of a square of side a. What is the potential at the centre of the square

Four electric charges +q, +q, -q and -q are placed at the corners of a square of side 2L (see figure). The electric potential at point A , mid-way between the two charges +q and +q , is

Four electric charges +q, +q, -q and -q are placed at the corners of a square of side 2L (see figure). The electric potential at point A , mid-way between the two charges +q and +q , is