Which energy transfer best describes the operation of a loudspeaker?

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Question

Which energy transfer best describes the operation of a loudspeaker?

Accepted Answer

Electrical energy → kinetic energy → sound energy — A loudspeaker receives electrical energy from the signal source. The motor effect converts this into kinetic energy of the vibrating coil and cone. The vibrating cone transfers energy to the surrounding air as sound energy. The reverse process describes a microphone.

Answer

Kinetic energy → electrical energy → sound energy

Answer

Electrical energy → magnetic energy → light energy

Answer

Sound energy → kinetic energy → electrical energy

Answer

Electrical energy → kinetic energy → sound energy

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