Question

The magnetic field ((B)) inside a long solenoid carrying current ' (i) ' with an iron core is (( \mu_0 =) vacuum permeability, (\chi =) susceptibility)

• A. (\mu_0 ni(1 + \chi))
• B. (\mu_0 ni^2(1 + \chi))
• C. (\mu_0 ni\chi)
• D. (\mu_0 ni(1 - \chi))

Hint:

Ferromagnetic cores significantly increase the magnetic field of a solenoid because $\chi$ is very large.

Answer 1

The Correct Option is A