How many amperes of current will a 2,500-watt heater draw when connected to a 120V circuit?

To determine how many amperes of current a 2,500-watt heater will draw when connected to a 120V circuit, you can use the formula for electrical power, which is:

Power (in watts) = Voltage (in volts) x Current (in amperes)

Rearranging this formula to solve for current gives you:

Current (in amperes) = Power (in watts) / Voltage (in volts)

Plugging in the values for the heater:

Current = 2500 watts / 120 volts = 20.83 amperes

This value rounds to approximately 20.8 amperes, which aligns with the choice indicated. Therefore, for a 2,500-watt heater operating on a 120V circuit, the correct calculation shows it draws roughly 20.8 amperes of current. The underlying principle here is the relationship between power, voltage, and current in an electrical circuit, which is essential knowledge for plumbing professionals dealing with electrical heating systems.