One type of filler material used in modern fuses is which?

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Multiple Choice

One type of filler material used in modern fuses is which?

Explanation:
Filler material in modern fuses is there to insulate and quickly absorb heat to quench the arc once the fuse element melts. Silica sand fits this role well because it’s chemically inert, non-conductive, and has strong heat-handling properties. When the fuse blows, the sand fills the space around the melted element, acting as a heat sink and providing physical separation that helps extinguish the arc and prevent re-ignition. Other materials wouldn’t provide the same safe, non-conductive environment; for example, a conductive filler like copper powder could keep current flowing or form a new arc path, and other options wouldn’t offer the same reliable insulation and arc-quenching effect.

Filler material in modern fuses is there to insulate and quickly absorb heat to quench the arc once the fuse element melts. Silica sand fits this role well because it’s chemically inert, non-conductive, and has strong heat-handling properties. When the fuse blows, the sand fills the space around the melted element, acting as a heat sink and providing physical separation that helps extinguish the arc and prevent re-ignition. Other materials wouldn’t provide the same safe, non-conductive environment; for example, a conductive filler like copper powder could keep current flowing or form a new arc path, and other options wouldn’t offer the same reliable insulation and arc-quenching effect.

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