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Electronics and Communication Engineering - Materials and Components - Discussion

Discussion Forum : Materials and Components - Section 1 (Q.No. 43)
Materials and Components
43.

Assertion (A): For a solenoid having N turns, .

Reason (R): For all magnetic materials, B increases linearly with I.

Both A and R are true and R is correct explanation of A
Both A and R are true but R is not correct explanation of A
A is true but R is false
A is false but R is true
Answer: Option
Explanation:

Increase of B with I is not linear. Hence R is false.

Discussion:
3 comments Page 1 of 1.
Bhaskar said:   9 years ago
Can anyone explain why magnetic flux density not linear with current?

My answer current is linear with flux density according to given formulae in the question.
Aman said:   8 years ago
Magnetic flux density not linear with length (L).
Mohit Sharma said:   7 years ago
Linear only for the solenoid. Not for all materials.
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