Multiple choice general knowledge science & technology

The fuse-wire used in electrical circuits is made of a material with a

  1. High melting point

  2. Moderate melting point

  3. Low melting point

  4. Low conductivity
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

A fuse wire must have a low melting point so it melts and breaks the circuit when excessive current flows, protecting appliances from damage. High conductivity (opposite of option D) is actually needed to allow normal current flow, while high or moderate melting points would prevent the fuse from functioning as a safety device.

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