Enter the elementary charge and the extra number of electrons into the calculator to determine the net charge.

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## Net Charge Formula

The following formula is used to calculate a net charge.

Q = n * e

- Where Q is the net charge (C)
- n is the number of extra electrons gained or lost
- e is the charge of one electron (1.6*10^-19 C)

## Net Charge Definition

**What is a net charge? **A net charge is the total charge of an atom that has gained or lost electrons causing it to have either a positive or negative charge.

## Example Problem

How to calculate net charge?

**First, determine the charge of one electron.**An electron charge is known to be approximately 1.6*10^-19 (C) where C is the units of Coulombs.

**Next, determine the number of electrons gained or lost.**For this problem, the atom has gained 2 electrons.

**Finally, calculate the net charge.**Using the formula above, the net charge is found to be 1.6*10^-19 * 2 = 3.2*10^-19.