Q=It

• Charge is a measure of the total current that flowed within a certain period of time.
• If current is the rate at which water is flowing through the river, then charge would be the total amount of water that's flowed down the hill within a certain period of time, such as a minute or an hour.
• Charge is represented with the letter q and is measured in coulombs, which is represented with a c.
• The equation to remember is that charge equals current measured in amps multiplied by time measured in seconds.