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Electromagnetic Operating Principle

An electromagnetic relay operates primarily on which fundamental physical principle?
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Answer & Explanation
Correct AnswerC. Magnetic attraction or electromagnetic induction

Quick Explanation

An electromagnetic relay converts an electrical quantity into magnetic force/torque using an energized coil. Depending on the relay construction, operation is based on magnetic attraction or electromagnetic induction.

Electromagnetic Operating Principle explanatory diagram

Detailed Explanation

Correct Answer

C — Magnetic attraction or electromagnetic induction

Explanation

An electromagnetic relay converts an electrical quantity into magnetic force/torque using an energized coil. Depending on the relay construction, operation is based on magnetic attraction or electromagnetic induction.

Key Concept

Electromagnetic Operating Principle

Exam Point

Electromagnetic relay → coil creates magnetic operating force.

Quick Trick

Electromagnetic relay → coil creates magnetic operating force.

Exam Tip

Electromagnetic relay → coil creates magnetic operating force.

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