MHT CET202310 May 2023Evening ShiftPhysicsMagnetic Effects of CurrentActual
A solenoid of 500 turns / m is carrying a current of 3 A. Its core is made of iron which has relative permeability 5001 . The magnitude of magnetization is
Options
- A4.5 10^6 Am ⁻¹
- B6.0 10⁻⁶ Am ⁻¹
- C7.5 10^6 Am ⁻¹
- D9.0 10^6 Am ⁻¹
Correct answer
C. 7.5 10^6 Am ⁻¹
Step-by-step solution
Given: n =500 turns / m , I =3 ~A aligned _ r =5001 & = nI & =500 3 ~A & =1500 ~A / m But, _ m & = _ r -1 & =5001-1 & =5000 aligned aligned Magnetization M & = _ m H & =5000 1500 & =7.5 10^6 Am ⁻¹ aligned