_____ is a piece of iron placed across the poles of a magnet to preserve the strength of the magnet.

_____ is a piece of iron placed across the poles of a magnet to preser

1.	_____ is a piece of iron placed across the poles of a magnet to preserve the strength of the magnet.
A.	Preserver
B.	Keeper
C.	100 W
D.	Compass
E.	None of these
Answer» C. 100 W

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_____ is a piece of iron placed across the poles of a magnet to preserve the strength of the magnet.

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