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Question 377

What is the purpose of a fuse in an electrical circuit?

  1. To prevent power supply ripple from damaging a component
  2. To remove power in case of an overloadBonne réponse
  3. To limit current and prevent shocks
  4. All these choices are correct

Explication

A fuse contains a conductor that melts and opens the circuit when current exceeds its rating, cutting power before wiring or equipment overheats. It protects the circuit against overload and short circuits, not people against shock, which is the job of a ground-fault device.

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Question 377: What is the purpose of a fuse in an electrical circuit? · FCC Technician Class (Element 2) · Questena