Using Ohm's law, how would one find the value of amps?

To find the value of amps using Ohm's law, the correct method involves dividing voltage by resistance. This fundamental relationship, expressed mathematically as I = V/R, indicates that current (measured in amps) is equal to the voltage (measured in volts) divided by the resistance (measured in ohms).

This principle is crucial in electrical work as it allows technicians to determine how much current will flow in a circuit given a specific voltage and resistance. Understanding this relationship is essential for various applications in HVAC systems, where managing electrical components safely and efficiently is necessary for proper system function and maintenance.

The other methods presented do not follow the basis of Ohm's law and would lead to incorrect calculations of current. For example, multiplying volts by resistance would yield a value in watts, not amps, which is related to power, not current. Similarly, subtracting voltage from resistance or dividing power by voltage does not yield a clear measure of current and can lead to confusion in electrical troubleshooting and system designs. Thus, employing the correct formula is vital for accurate assessments in HVAC tasks.