Two reasons why the soft coil iron core is needed
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Answered by
3
Explanation:
A soft iron core is used in a moving coil galvanometer. The soft iron core attracts the magnetic lines of force and hence the strength of the magnetic field increases if we use soft iron core. Thus the sensitivity of galvanometer increases.
Answered by
2
Explanation:
- soft iron core is needed for making of temperary magnet
- it is used because it can be easily magnetise and demagnetises
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