Class 12PhysicsMoving Charges and MagnetismAmpere’s circuital law and its application (Solenoid and Toroid)
Medium$A$ $25\,cm$ long solenoid has radius $2\,cm$ and $500$ total number of turns. It carries a current of $15\,A.$ If it is equivalent to a magnet of the same size and magnetization $\vec M$ (magnetic moment per unit volume),then $\left| {\vec M} \right|$ is
- A$30000\pi \,A m^{-1}$
- B$3\pi \,A m^{-1}$
- C$30000 \,A m^{-1}$
- D$300 \,A m^{-1}$
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