Electrostatics Question 201
Question: Two copper balls, each weighing 10g are kept in air 10 cm apart. If one electron from every atoms is transferred from one ball to the other, the coulomb force between them is (atomic weight of copper is 63.5) [KCET 2002]
Options:
A)
B)
C)
D)
Show Answer
Answer:
Correct Answer: C
Solution:
Number of atoms in given mass
Transfer of electron between balls
Hence magnitude of charge gained by each ball. Q = 9.48 x 1016 x 1.6 x 10^19 = 0.015 C
Force of attraction between the balls