For the system in figure find Q for which resultant force on q is zero.

For the system shown below, the value of Q for which resultant force on q is zero is

The opposite corners of square carry Q charges each and the other two opposite corners of the same square carry q charges each. If the resultant force on q is zero , how are Q and q related?

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 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 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, A charge q is placed at each of the two other opposite corners of the square. If the resultant electric force field on Q is zero, then how Q and q are related ?

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 resultant electric force on a charge Q?

Three charges 4q , Q and q are in a straight line in the position 0, l/2 and l respectively. The resultant force on q will be zero if Q is equal to

Three charges 4q, Q and q are in a straight line in the position of 0. l//2 and l respectively. The resultant force on q will be zero, if Q=