The S.I. unit of electric charge is – (1) ampere (2) coulomb (3) e.s.u (4) Kelvin

The S.I. unit of electric charge is – (1) ampere (2) coulomb (3) e.s.u (4) Kelvin
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(2) coulomb Explanation: The SI unit of quantity of electric charge is the coulomb, which is equivalent to about 6.242x10^18 e (e is the charge of a proton). Hence, the charge of an electron is approximately -1.602x10^-19 C. The coulomb is defined as the quantity of charge that has passed through the cross section of an electrical conductor canying one ampere within one second.
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