Q.
A solenoid having a length 25 cm and total nnumber of turns equal to 500, carries a current of 15 A. If we consider it to be a magnet then find its magnetization.
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a
3πAm−1
b
30000Am−1
c
30000πAm−1
d
300Am−1
answer is B.
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Detailed Solution
Volume =Al Magnetization M→= magnetic monent Volume =( No.of turns )×( Current )× Area Volume =NIAAl=NIl=500×15×10025=60×500=30×103=30000Am−1
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