Question:
A solenoid has core of a material with relative permeability $500$ and its windings carry a current of $1\, A$. The number of turns of the solenoid is $ 500\text{ }{{m}^{-1}} $ . The magnetization of the material is nearly
A solenoid has core of a material with relative permeability $500$ and its windings carry a current of $1\, A$. The number of turns of the solenoid is $ 500\text{ }{{m}^{-1}} $ . The magnetization of the material is nearly
Updated On: Jun 23, 2023
- $ 2.5\times {{10}^{3}}A{{m}^{-1}} $
- $ 2.5\times {{10}^{5}}A{{m}^{-1}} $
- $ 2.0\times {{10}^{3}}A{{m}^{-1}} $
- $ 2.0\times {{10}^{5}}A{{m}^{-1}} $
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The Correct Option is B
Solution and Explanation
Given, $ {{\mu }_{r}}=500,i=1 $ and $ n=500 $
Intensity of magnetisation
$ I={{\chi }_{m}}H $
$ =({{\mu }_{r}}-1)ni $
$ =(500-1)\times 500\times 1 $
$ =499\times 500\times 1 $
$ =2.495\times 10s $
$ =2.5\times {{10}^{5}}A/m $
Intensity of magnetisation
$ I={{\chi }_{m}}H $
$ =({{\mu }_{r}}-1)ni $
$ =(500-1)\times 500\times 1 $
$ =499\times 500\times 1 $
$ =2.495\times 10s $
$ =2.5\times {{10}^{5}}A/m $
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Concepts Used:
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Magnets are used in many devices like electric bells, telephones, radio, loudspeakers, motors, fans, screwdrivers, lifting heavy iron loads, super-fast trains, especially in foreign countries, refrigerators, etc.
Magnetite is the world’s first magnet. This is also called a natural magnet. Though magnets occur naturally, we can also impart magnetic properties to a substance. It would be an artificial magnet in that case.
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Some of the properties of the magnetic field lines are:
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- But here the lines seem to originate from the South pole and terminate at the North pole to form closed loops.
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- The tangent drawn at the field line gives the direction of the field at that point.