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Question

Make M the subject of formula T=2πIMH

A
M=4πlT2H
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B
M=2π2lT2H
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C
M=4π2lT2H
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D
none of these
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Solution

The correct option is C M=4π2lT2H
Given, T=2πIMH
Squaring on both sides, we get
T2=4π2IMH
MHT2=4π2I
M=4π2IT2H

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