Question

The magnetic compass is not made by arranging magnetic needle inside a soft iron case. Why?

Answer 1

Reason:

• Permanent magnetism cannot be obtained using a soft iron case.
• Errors due to eddy currents
• Cannot point the true north
• Quadrantral deviation
• Induced magnetism
• Asymmetrical arrangement
• Changing induction

Hence, The magnetic compass is not made by arranging magnetic needle inside a soft iron case.