Normally open contacts are open when the relay coil is de-energized.

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Prepare for the NCCER Electrical Level 2 Control Systems and Fundamental Concepts exam. Utilize flashcards and multiple choice questions with hints and explanations. Ensure success on your exam!

Multiple Choice

Normally open contacts are open when the relay coil is de-energized.

Explanation:
Normally open refers to a contact that has no current path in its resting state. When the relay coil is not energized, the NO contact is open. Energizing the coil creates a magnetic pull that closes the contact, allowing current to flow. Because the coil is de-energized, the contact remains open, so the statement is accurate. If you need the opposite behavior, you’d use a normally closed contact, which is closed when the coil is de-energized and opens when energized.

Normally open refers to a contact that has no current path in its resting state. When the relay coil is not energized, the NO contact is open. Energizing the coil creates a magnetic pull that closes the contact, allowing current to flow. Because the coil is de-energized, the contact remains open, so the statement is accurate. If you need the opposite behavior, you’d use a normally closed contact, which is closed when the coil is de-energized and opens when energized.

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