The ratio of q and Q so as to make the system in equilibrium is

Four equal charges q are placed at the four corners of a square of length of each side a. What charge should be kept at the middle of the square so that the system is in equilibrium ?

Three point charges q are placed on vertices of an equilateral triangle of side length a . The charge Q that should be kept at centroid of triangle such that the system is in equilibrium is equal to

For the given situation as shown in the figure, the value of q theta keep the system in equilibrium will be

If a charge q is placed at the centre of the line joining two equal charges Q such that the system is in equilibrium then the value of q is

Two particles (free to move) with charges +q and +4q are a distance L apart. A third charge is placed so that the entire system is in equilibrium. (a) Find the location, magnitude and sign of the third charge. (b) Show that the equilibrium is unstable.

Two particles (free to move) with charges +q and +4q are a distance L apart. A third charge is placed so that the entire system is in equilibrium. (a) Find the location, magnitude and sign of the third charge. (b) Show that the equilibrium is unstable.

Two particles (free to move) with charges +q and +4q are a distance L apart. A third charge is placed so that the entire system is in equilibrium. (a) Find the location, magnitude and sign of the third charge. (b) Show that the equilibrium is unstable.

A charge Q_(1)=+1" C " and Q_(2)=-4 C are fixed at a separation of 1 m. Where should you place the third charge 'q', so that the entire system is in equilibrium ?

A charge Q_(1)=+1" C " and Q_(2)=-4 C are fixed at a separation of 1 m. Where should you place the third charge 'q', so that the entire system is in equilibrium ?

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.