
ncert.nic.in
https://ncert.nic.in/textbook/pdf/jesc111.pdf
CHAP 11 - NCERT
(We know that an electron possesses a negative charge of 1.6 × 10–19 C.) The electric current is expressed by a unit called ampere (A), named after the French scientist, Andre-Marie Ampere (1775–1836). One ampere is constituted by the flow of one coulomb of charge per second, that is, 1 A = 1 C/1 s.