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JEE PHYSICS MCQ: MAGNETISM AND MATTER
1
Medium
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Understanding
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Given below are two statements; one is labeled as Assertion A and the other is labeled as Reason R.
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.
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.
View answer and explanation
Correct option: B
Both A and R are correct and R is the correct explanation of A
Option B (Both A and R are correct and R is the correct explanation of A) is correct because soft iron's high permeability allows easy magnetization, and low retentivity allows easy demagnetization, making it ideal for electromagnets.
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