Advantages of electro magnetic over permanent magnet????
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The main advantage is that rhe magnetic field in an electromagnet can be quickly changed by controlling the amount of electric current in the winding.However unlike the permanent magnet that needs no power an electromagnet requires a continuous supply of current for magnetic charge.
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Permanent magnet strength depends upon the material used in its creation.
The strength of an electromagnet can be adjusted by the amount of electric current allowed to flow into it.
and the same electromagnet can be adjusted for different strength levels.
The strength of an electromagnet can be adjusted by the amount of electric current allowed to flow into it.
and the same electromagnet can be adjusted for different strength levels.
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