What happens to a normally open contact when its coil is 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

What happens to a normally open contact when its coil is energized?

Explanation:
When a normally open contact is energized, it closes. This happens because energizing the coil creates a magnetic pull that brings the contact together, forming a conducting path and completing the circuit. At rest it is open, and after de-energizing it returns to the open state. This is why the correct action is closing when energized. It does not open, does not short the circuit simply by energizing, and does not remain unchanged.

When a normally open contact is energized, it closes. This happens because energizing the coil creates a magnetic pull that brings the contact together, forming a conducting path and completing the circuit. At rest it is open, and after de-energizing it returns to the open state. This is why the correct action is closing when energized. It does not open, does not short the circuit simply by energizing, and does not remain unchanged.

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