Wiring and componentsQuestion 814 of 1506

How is a fuse connected relative to the load it protects?

  1. In parallel across the load, to bypass any extra current
  2. In parallel with the supply, to clamp the voltage
  3. Across the load terminals, to absorb voltage spikes
  4. In series with the load, so it can open the circuit
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Correct answer: In series with the load, so it can open the circuit

Only a series device can stop all current to the load when it melts open.

Source: Lessons in Electric Circuits I: DC (Kuphaldt), 12.4: Fuses

Practice wiring and components

Questions last reviewed: 18 October 2026