A magnetizing and demagnetizing coil is a solenoid that can be used to magnetize and demagnetize iron bars, magnets, and strips. It’s made up of insulated copper wire wrapped around a solenoid that’s mounted on a base with a switch and 4 mm terminals.
Here’s how to use a magnetizing and demagnetizing coil:
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MagnetizationConnect the coil to a direct current power supply and place an iron bar inside the solenoid. The polarity of the bar will depend on the direction of the current flow.
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DemagnetizationConnect the coil to an alternating current power supply and place a magnetized bar inside the solenoid for a short time. Then, slowly remove the bar from the solenoid or gradually reduce the AC voltage to zero.
Magnetizing and demagnetizing coils are often used in physics laboratories.
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