Mahesh was travelling in a bus. Suddenly the weather changed and it started raining. After sometime rain stopped and all the passengers opened their windows. But lightning started immediately. Then he suggested to shut the doors and windows of the bus, otherwise it may be dangerous.
(a) What values were shown by Mahesh ?
(b) Two charges 5μC and - 2μC are placed at points (5 cm, 0, 0) and (23 cm,0, 0) in a region of space where there is no other external field. Calculate the electrostatic potential energy of this charge system.
