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Question
choose the correct answer. which uses a magnet? pulley copper wire reflector motor
A motor operates based on the principle of electromagnetic induction. It contains magnets (either permanent magnets or electromagnets) and coils of wire. When an electric current passes through the coils, a magnetic field is created, which interacts with the existing magnetic field of the magnets to produce rotational motion. A pulley is a simple mechanical device that changes the direction of a force (uses the principle of leverage and ropes, no magnet involved). Copper wire is just a conductor (used for conducting electricity, no magnet in its basic function). A reflector (like in a flashlight) reflects light (uses the property of reflection of light, no magnet).
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Motor.