Question

a)how can the strength of the magnetised iron rod be increased?
b)what is the difference between a steel rod and an iron rod which are magnetised using this method?

Answer 1

Explanation:

Answer is A. If a soft iron rod called core is placed inside a solenoid, then the strength of the magnetic field becomes very large because the iron ore is magnetized by induction. ... The smaller the space between the coils and the core, the stronger is the magnetism induced in the core.

Answer 2

1) The strength of the magnetized iron rod can be increased by increasing the number of coils or bringing it near to a powerful magnet

2) The strength of the iron rod is more than of steel as steel is an alloy of iron and carbon a iron is a more magnetic material than steel

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