Magnetism and Electromagnetism
A permeable substance is one

Which is a good conductor
Which is a bad conductor
Through which the magnetic lines of force can pass very easily
Which is a strong magnet

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Magnetism and Electromagnetism
A permanent magnet

Attracts ferromagnetic substances and repels all others
Attracts only ferromagnetic substances
Attracts all paramagnetic substances and repels others
Attracts some substances and repels others

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