Two particles A and B having charges 20$$\mu$$C and $$-$$5$$\mu$$C respectively are held fixed with a separation of 5 cm. At what position a third charged particle should be placed so that it does not experience a net electric force?
At 5 cm from 20 $$\mu$$C on the left side of system
At 5 cm from $$-$$5 $$\mu$$C on the right side
At 1.25 cm from $$-$$5 $$\mu$$C between two charges
At midpoint between two charges
Null point is possible only right side of $$-$$5 $$\mu$$C