If a digital multimeter is set up as shown in figure "A" of the illustration to test an AC contactor coil, what would the display read if the coil is open-circuited? Illustration EL-0214

Correct Answer: Option D — OL ohms

An open-circuited contactor coil has infinite resistance. When configured for resistance measurement using a digital multimeter, an open circuit exceeds the meter threshold, displaying 'OL' (over limit) on the screen per standard diagnostic procedures in IEEE 45.