GEOLOGY

Detailed explanation-1: -In 1820, a Danish physicist, Hans Christian Oersted, discovered that there was a relationship between electricity and magnetism. By setting up a compass through a wire carrying an electric current, Oersted showed that moving electrons can create a magnetic field.

Detailed explanation-2: -Oersted observed that a magnetic compass needle deflected violently when brought close to a current carrying wire. This effect led him to conclude that moving charges in the form of a current possesses certain magnetic field, so a wire can act as a magnet.

Detailed explanation-3: -During a lecture demonstration, on April 21, 1820, while setting up his apparatus, Oersted noticed that when he turned on an electric current by connecting the wire to both ends of the battery, a compass needle held nearby deflected away from magnetic north, where it normally pointed.

Detailed explanation-4: -In 1820, Hans Christian Oersted performed an important experiment which showed that there was a connection between electricity and magnetism. When a current was switched on through a wire, it made a compass needle turn so that it was at right angles to the wire.

Detailed explanation-5: -Ans. When a magnetic compass needle was introduced close to a current carrying wire, Oersted noticed that the needle deflected violently. His observations of this effect led him to conclude that moving charges in the form of currents had a magnetic field and that a wire can act as a magnet as a result of this.