Twenty seven drops of same size are charged at 200 V each. They combine to form a bigger drop. Calculate the potential of the bigger drop.
Twenty seven drops of same size are charged at 200 V each. They combine to form a bigger drop. Calculate the potential of the bigger drop.

(1) 660 V                                      (2) 1320 V
(3) 1520 V                                    (4) 1980 V

Solution: Answer (4)