Statement : Electromagnets are made of soft iron
Statement : Soft iron has lower permeability and high retentivity.
Choose the correct option related to statements.
Important Questions on Magnetic Effects of Current and Magnetism
These materials are used to make magnets for electric generators, transformer core and electromagnet core. Then it is proper to use:
Statement I : The ferromagnetic property depends on temperature. At high temperature, ferromagnet becomes paramagnet.
Statement II : At high temperature, the domain wall area of a ferromagnetic substance increases. In the light of the above statements, choose the most appropriate answer from the options given below:
The figure gives experimentally measured vs. variation in a ferromagnetic material. The retentivity, coercivity and saturation, respectively, of the material are:
Given below are two statements: one is labelled as Assertion and the other is labelled as Reason .
Assertion A : Electromagnets are made of soft iron.
Reason R : Soft iron has high permeability and low retentivity.
In the light of above statements, choose the most appropriate answer from the options given below.
Curie temperature is the temperature above which:
