Magnetism and Electromagnetism
When an iron piece is placed in a magnetic field

the magnetic lines of force will bend away from their usual paths in order to go away from the piece
the iron piece will break
the magnetic field will not be affected
the magnetic lines of force will bend away from their usual paths in order to pass through the piece

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Magnetism and Electromagnetism
The magnetic reluctance of a material

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

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