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    Question

    How does an earphone convert electrical signals into sound?

    A Magnets Correct Answer Incorrect Answer
    B Motion Correct Answer Incorrect Answer
    C Wires Correct Answer Incorrect Answer
    D Friction Correct Answer Incorrect Answer

    Solution

    Earphones use magnets along with coils to convert electrical energy into sound. The magnets create a magnetic field that causes the earphone diaphragm to vibrate, producing sound waves that we hear.

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