12. Which among the following cannot be the charge of a charged body? a) 4.8*10-14 Coulomb b) 6.4*10-15 Coulomb c) 5*10-14 Coulomb d) 3.2*10-10 Coulomb
Answer: c Explanation: Charge of a body must be an integral multiple of charge of an electron. 5*10-14 is not an integral multiple of (1.602*10-19 Coulomb) which is equal to the charge of an electron. But we can see that 4.8, 6.4, 3.2 are integral multiples of 1.6.
option C
