Magnetism and Electromagnetism
A permanent magnet

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

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Magnetism and Electromagnetism
The magnetic reluctance of a material

Any of the listed here
Decreases with increasing cross sectional area of material
Increases with increasing cross-sec-tional area of material
Does not vary with increasing cross-sectional area of material

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