Choose the device that works on the principle of magnetic effects of electric current.

Iron box

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Wind turbine

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Loudspeakers

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Lever

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Solution

The correct option is C Loudspeakers
Loudspeakers contain speakers in it. Speaker is a device that has a diaphragm which produces sound on vibration. This vibration is provided by an electromagnet in the speaker.

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Name one device which works on the principle of magnetic effect of current.

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