Heating, Ventilation, and Air Conditioning (HVAC ) Electrical Practice Test

Disable ads (and more) with a membership for a one time $4.99 payment

Prepare for the HVAC Electrical Test with our comprehensive study guides. Practice with flashcards, multiple-choice questions, and detailed explanations. Ensure success on your exam day!

Start Multiple Choice Practice Test
Start Flash Cards

Practice this question and more.

What unit measures electrical resistance?

  1. Volts

  2. Amperes

  3. Ohms

  4. Watts

The correct answer is: Ohms

The unit that measures electrical resistance is Ohms. This measurement is critical in understanding how much a material resists the flow of electric current. According to Ohm’s Law, resistance is defined as the ratio of voltage (in volts) to current (in amperes). Therefore, when analyzing electrical circuits, Ohms help determine how much electrical energy will be lost due to resistance as it passes through various materials. In the context of HVAC systems, understanding resistance is vital because it affects performance and efficiency. Components like heaters and motors experience resistance, which can impact energy consumption and heat generation. The other units mentioned—volts, amperes, and watts—each serve different functions in an electrical system. Volts measure electrical potential, amperes measure current flow, and watts measure the power consumed or generated. These units all interrelate within Ohm's Law, but only Ohms specifically quantify resistance.

More Questions Like This