Industrial Maintenance Technician Practice Test 2026 – Your All-in-One Guide to Exam Success!

To find the connected voltage across an electric motor when given its apparent resistance and the current flowing through it, you can use Ohm's law. Ohm's law states that voltage (V) is equal to the current (I) multiplied by the resistance (R). The formula can be expressed as:

V = I × R

In this scenario, the apparent resistance is 15 ohms and the current is 8 amps. Plugging these values into the equation gives:

V = 8 amps × 15 ohms

V = 120 volts

This calculation clearly shows that the voltage connected to the motor is 120 volts. The correct answer is thus 120 volts, directly derived from applying Ohm's law to the given values. Such calculations are fundamental in understanding how electrical devices operate and are critical for maintenance and troubleshooting in industrial settings.