What is the formula for determining amperes?

The formula for determining amperes is based on the relationship defined by Ohm's Law and the equation for electrical power. Power (measured in watts) is equal to the product of voltage (measured in volts) and current (measured in amperes). This relationship can be expressed as:

Power (Watts) = Voltage (Volts) × Current (Amperes)

To isolate the current or amperes, you can rearrange this equation. Dividing both sides by voltage gives:

Current (Amperes) = Power (Watts) ÷ Voltage (Volts)

This equation makes it clear why dividing watts by volts gives you the current in amperes. Understanding this relationship is crucial in electrical practice since it allows you to calculate the current flowing through a circuit if you know the power being used and the voltage supplied.