Question

An ampere (amp) of current is defined as a coulomb (C) of charge flowing past a point in one second. One electron has a charge of 1.6 x 10⁻¹⁹ C. How many electrons are needed for a coulomb of charge?

Answer 1

Approximately 6.25 x 10¹⁸ electrons are needed for a coulomb of charge.

Step-by-step explanation:

An ampere (amp) of current is defined as a coulomb (C) of charge flowing past a point in one second. One electron has a charge of 1.6 x 10⁻¹⁹ C. To determine how many electrons are needed for a coulomb of charge, we can use the fact that 1 ampere is equivalent to 1 coulomb per second. Therefore, if we divide 1 C by the charge of one electron (1.6 x 10⁻¹⁹ C), we can find the number of electrons needed for a coulomb of charge:

Number of electrons = 1 C / (1.6 x 10⁻¹⁹ C) = 6.25 x 10¹⁸ electrons

So, there are approximately 6.25 x 10¹⁸ electrons needed for a coulomb of charge.