Class 12PhysicsMoving Charges and MagnetismAmpere’s circuital law and its application (Solenoid and Toroid)
EasyThe magnetic field $(B)$ inside a long solenoid having '$n$' turns per unit length and carrying current '$i$' when an iron core is kept in it,is ($\mu_0 =$ permeability of vacuum,$\chi =$ magnetic susceptibility).
- A$\mu_0 ni(1+\chi)$
- B$\mu_0 ni^2(1+\chi)$
- C$\mu_0 ni \chi$
- D$\mu_0 ni(1-\chi)$
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