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Electromagnet - class-VIII
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A permanent magnet in the shape of a thin cylinder of length $10$cm has magnetisation (M) $=10^6$A $m^{-1}$. It's magnetization current $I _M$ is?
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A
$10^5$A
💡 Explanation:
Given:
The length of the thin cylinder is $10\ cm$.
The magnetization of the magnet is $10^6 A/m$
The magnetization current is given by:
$I _M=M\times l$
$I _M=10^6\times 0.1$
$\Rightarrow10^5\ A$