Question

A solenoid has a core of a material with relative permeability $500$. The winding of the solenoid are insulated from the core and carry current of $5\text{A}$. If the number of turns are $1000$ per metre, what is the intensity of magnetization of the core?

• A. $2.495\times {10}^6\text{A/m}$
• B. $5.225\times {10}^5\text{A/m}$
• C. $6.335\times {10}^5\text{A/m}$
• D. $5.325\times {10}^6\text{A/m}$

Answer 1

The correct option is A $2.495\times {10}^6\text{A/m}$

Intensity of magnetization,

$I_m=\chi H$

$\therefore I_m=({\mu }_r-1)\times H=({\mu }_r-1)ni$

$=(500–1)\times 1000\times 5=2.495\times {10}^6\text{A/m}$