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Physics CBSE Live product
Class 8 (2026-27)
Electricity: Magnetic and Heating Effect
Electromagnet & Its Applications
6.
Effect of core material in electromagnet
Question:
2
m.
Choose the best answer:
1
.
What makes soft iron suitable to be used as the core in electromagnets?
It is a poor conductor of electricity
It is a permanent magnet
It can be easily magnetised and demagnetised
It is very light in weight
2
.
Why is soft iron preferred over other materials for electromagnets?
It does not allow current to pass
It is the cheapest metal only
It loses magnetism quickly after current is switched off
It remains magnetised permanently
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