Two electrons and a positive charge q are hold along a straight line. At what position and for what value of q will the system be in equilibrium.

Two negative charges of a unit magnitude and a positive charge q are placed along a straight line. At what position and value of q will the system be in equilibrium? (Negative charges are fixed).

Two negative charges of a unit magnitude and a positive charge q are placed along a straight line. At what position and value of q will the system be in equilibrium? (Negative charges are fixed).

Two negative point charges each of magnitude 8xx10^(-8)C and another positive charge Q are placed on the same straight line. At what position and for what value of Q, the system will remain in equilibrium?

Two charges each of +Q units are placed along a line. A third charge - q I placed between them. At what position and for what value of q, will the system be in equilibrium?

Two negative charges each of 1 unit and a positive charge q are placed along a straight line. Find the magnitude and position of q for which all the chargews will remain at equilibrium? Is the equilibrium stable, unstable or neutral in this case?

Two positive point charges Q and one negative point charge q are arranged in a straight line in such a manner that the complete system remains in equilibrium. What can be the magnituude of Q/q ?

Two negative charges each of 1 unit and a positive charge q are placed on a straight line. Where should the charge q be placed and what should be its value for equilibrium of the charges? Is this equilibrium stable, unstable or neutral ?

Two charges each of +q coulomb are placed along line. A third charge -q is placed between them. At what position will the system be in equilibrium ?

Two negative point charges each of magnitude 2 esu and another point charge q are lying on a straight line. Each of the charges are in equilibrium. Determine the position, value and the nature of the 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