what happens when current is passed through a solenoid?
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A solenoid is a long coil of wire wrapped in many turns. When a current passes through it, it creates a nearly uniform magnetic field inside. Solenoids can convert electric current to mechanical action, and so are very commonly used as switches.
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A solenoid is a long coil of wire wrapped in many turns. When a current passes through it, it creates a nearly uniform magnetic field inside. As a result the solenoid acts as a temporary magnet. When the current stops passing it loses its magnetism.
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