The charge on an electron is _______ coulombs.

Q. The charge on a neutron is:

Q. The charge in coulombs of 1 gram ion of N^3- is (the charge on an electron is 1.602 × 10 ^-19 C)
(A) 2.894 × 10 ^5 C (B) 3.894 × 10 ^5 C (C) 2.894× 10^6 C (D) none of these

Q. Assertion :The mass of electrons is least among all the fundamental particles. Reason: The charge of an electron is $-1.602\times {10}^{-19}C$.