What did Joseph Henry develop into a practical device?
Electromagnet
Electric generator
Electric motor
Battery
Answer
Joseph Henry developed the electromagnet into a practical device in the early 1800s. He discovered that the magnetic field around a conductor increased when an electric current was passed through it. This discovery led to the development of the electromagnet, which is a powerful magnet that is created by passing an electric current through a coil of wire.
Unveiling the Legacy: Joseph Henry Quiz
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