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Discovery Of Electromagnets By Hans Oersted

Electromagnets Hans Oersted

In 1819, a Danish scientist Hans Oersted, while doing an experiment, observed that a magnetic needle lying on the side got deflected when he switched on the current. The needle went back to its original position when the current was switched off. Electrical current, thus, appeared to generate a magnetic field. This discovery by Oersted allowed us to make electromagnets. An electromagnet is an insulated wire wound around a piece of iron. The current flowing through the coil generates a magnetic field that magnetizes the iron in the coil. The stronger the current, the stronger the electromagnet.