The self - inductance of are air – core solenoid is 4.8mH . If its core is replaced by iron
core, then its self inductance becomes 1.8H find out the relative permeability of iron
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4.8/1.8=2.66 . Its correct
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Answer:4.8mh=4.8X10^-3
4.8X10^-3/1.8=2.666X10^-3 this is correct
Explanation:
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