AP EAMCET · PHYSICS · Magnetic Properties of Matter
When a piece of a magnetic substance is put in a uniform magnetic field, the flux density inside it is four times the flux density away from the piece. The magnetic permeability of the material is
- A \(1\)
- B \(2\)
- C \(3\)
- D \(4\)
Answer & Solution
Correct Answer
(D) \(4\)
Step-by-step Solution
Detailed explanation
Let magnetic flux density outside \(=B_0\) Magnetic flux density inside a magnetic material, \(B=4 B_0\) We know that, \(B=\mu_r B_o\) where, \(\mu_r=\) Magnetic permeability of material \(\Rightarrow \quad \mu_r=\frac{B}{B_0}=4\)
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