Under what conditions permanent electromagnet is obtained if a current carrying solenoid is used?
Answers
Explanation:
The following conditions are required to obtain permanent electromagnet when a current carrying solenoid is used:
1. Rod inside the solenoid should be made of magnetic material like steel which should retain magnetic properties for a long time after magnetization.
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2. The current through the solenoid should be direct current.
3. The number of turns in the solenoid should be large and closely packed, so that a strong uniform magnetic field inside it is produced.
Answer:
The following conditions are required to obtain permanent electromagnet when a current carrying solenoid is used: 1. Rod inside the solenoid should be made of magnetic material like steel which should retain magnetic properties for a long time after magnetizationlanation: