Electromagnets are made of soft iron because soft iron has [2010]a)lo...
Answer :- d
Solution :-Soft iron is a soft magnetic material. Hence, Electromagnetics are made of soft iron because soft iron has low retentivity and low coercive force or low coercivity.
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Electromagnets are made of soft iron because soft iron has [2010]a)lo...
Electromagnets are made of soft iron because soft iron has high retentivity- When the magnetising field is reduced to zero, soft iron retains magnetisation. and Low coercive force-To demagnetise the soft iron, a small force is required .
Electromagnets are made of soft iron because soft iron has [2010]a)lo...
Soft iron in electromagnets
Soft iron is used in electromagnets due to its specific magnetic properties that make it ideal for the application. The characteristics of soft iron that make it suitable for electromagnets are as follows:
Low retentivity
- Soft iron has low retentivity, meaning it does not retain magnetism once the external magnetic field is removed. This property allows the electromagnet to be easily controlled and manipulated as needed.
- When the current is turned off, the magnetic field quickly dissipates in soft iron, making it suitable for applications where rapid changes in magnetism are required.
Low coercive force
- Soft iron also has low coercive force, which means it requires less energy to demagnetize compared to materials with higher coercivity.
- This property allows the electromagnet to be switched on and off efficiently, making it useful for various applications such as in electric relays, MRI machines, and electric motors.
Conclusion
In conclusion, soft iron is the preferred material for electromagnets due to its low retentivity and low coercive force, which make it easy to control and manipulate the magnetic field. These properties are essential for the efficient operation of electromagnets in various devices and systems.