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Electromagnet - class-VIII

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Multiple Choice

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?

  1. $10^5$A
  2. $10^6$A
  3. $10^7$A
  4. $10^8$A
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