Principle of Electro Magnetism

Electro Magnetism. When a magnetic material like an iron bar placed inside a long coil of insulated wire carrying a strong current, the iron bar will behave like a magnet. The magnet made by this (electric) method is known as electromagnet and this phenomenon is known as electromagnetism. It is capable of raising heavier load than the permanent magnet. The magnetic field around the conductor in which the current is flowing all the lines shown would appear more as continuous in cylindrical or circle form around the conductor as long as…

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