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Transcript
Oersted and Ampere Oersted Current carrying wire deflects compass – connection between electricity and magnetism Electromagnetism Ampere Current carrying wires create circular magnetic fields around the wire. Direction of the field depends on the direction of the current. Solenoid Coil of wire – each loop contributes to the total magnetic strength N B o I l Electromagnet w/ Core •Ferromagnetic material inserted in solenoid •Domains are aligned by the magnetic field •Stronger magnet
