Basic Concepts

Charge

How to convert electron charge to coulombs

1C = 6.24150975·10¹⁸e

or

1e = 1.60217646·10^-19C

Electron charge to coulombs conversion formula

The charge in coulombs Q_(C) is equal to the charge in electron charge Q_(e) times 1.60217646·10^-19:

Q_(C) = Q_(e) × 1.60217646·10^-19

Example

Convert 3 electron charge to coulombs:

Q_(C) = 3e × 1.60217646·10^-19= 4.8065·10^-19C

Voltage

• Voltage is a representation of the electric potential energy per unit charge.
• Voltage is a scalar quantity. The SI unit of voltage is the volt, such that 1 volt = 1 joule/coulomb.

Power

• Electric power is the rate at which electric energy is transferred by an electric circuit.
• The SI unit of power is the watt, one joule per second.

Energy

• The capacity for work or vigorous activity; vigor; power.
• Measured in Joules.