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

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

In the given figure a capacitor of plate area A is charged up to charge q . The mass of each plate is m_2 The lower plate is rigidly fixed. Find the value of m_1 so that the system remains in equilibrium -

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.

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.

Two positively charged particles each having charge Q and are d distance apart. A third charge is introduced in midway on the line joining the two charges. Find the nature and magnitude of third charge so that the system is in equilibrium.

Four charges equal to -Q are placed at the four corners of a square and a charge q is at its centre. If the system is in equilibrium the value of q is

Four charges equal to -Q are placed at the four corners fo a square and a charge q is at its centre, If the system is in equilibrium the value of q si