Question

What is the value of 1 coulomb?

Answer 1

The coulomb (C) is the unit of electric charge in the International System of Units (SI). One coulomb is defined as the amount of charge transported by a constant current of one ampere in one second. Mathematically, 1 coulomb is equal to 1 ampere-second (1 C = 1 A·s).

In terms of fundamental constants, 1 coulomb is approximately \(6.242 \times 10^{18}\) elementary charges (the charge of a single proton or electron).

Answer 2

The value of 1 coulomb (C) is defined as the amount of electric charge transported by a constant current of 1 ampere (A) flowing for 1 second (s). In more practical terms:

\[ 1 \text{ coulomb} = 1 \text{ ampere} \times 1 \text{ second} \]

In terms of fundamental units, 1 coulomb is equal to:

\[ 1 \text{ C} = 1 \text{ A} \cdot \text{s} \]

To put it in context, this is approximately \(6.242 \times 10^{18}\) elementary charges (such as electrons) because the charge of a single electron is approximately \(1.602 \times 10^{-19}\) coulombs.