MHT CET · Physics · Magnetic Properties of Matter
The magnetic field (B) inside a long solenoid having ' n ' turns per unit length and carrying current ' \(i\) ' when iron core is kept in it, is ( \(\mu_0=\) permeability of vacuum, \(\chi=\) magnetic susceptibility)
- A \(\mu_0 \mathrm{ni}(1+\chi)\)
- B \(\mu_0 \mathrm{ni}^2(1+\chi)\)
- C \(\mu_0 \mathrm{ni} \chi\)
- D \(\mu_0 \operatorname{ni}(1-\chi)\)
Answer & Solution
Correct Answer
(A) \(\mu_0 \mathrm{ni}(1+\chi)\)
Step-by-step Solution
Detailed explanation
Magnetic field intensity: \(H = ni\) Permeability of material: \(\mu = \mu_0 (1 + \chi)\)
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