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Which of the following would not be a good fuse design?
A. low-melt wire encased in glass
B. low-melt wire encased in ceramic
C. low-melt wire encased in iron
D. low-melt wire encased in a tube of air
you can figure this out knowing nothing about fuses; notice that all choices involve a low melt wire, so that is a constant of each choice
the only differences are the materials in which they are encased...which one is not like the others...glass, ceramic and air are all insulators, only iron is a conductor so logic strongly suggests iron must be the answer
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