What is the current required to operate a device rated for 1200 watts at 120 volts?

To determine the current required to operate a device rated for 1200 watts at 120 volts, you can use the formula derived from Ohm's Law, which relates power (watts), voltage (volts), and current (amps). The formula is:

Power (P) = Voltage (V) × Current (I)

Rearranging this formula to solve for current gives:

Current (I) = Power (P) / Voltage (V)

Plugging in the given values:

Current (I) = 1200 watts / 120 volts = 10 amps

Therefore, the correct answer is 10 amps. This calculation shows how power and voltage are directly related to current, and it’s a fundamental concept that underpins electrical and gas technician training. Recognizing how to manipulate these units is crucial for ensuring that devices are operated safely and effectively within their rated capacity.