DC circuitsQuestion 548 of 1506

What is a short circuit?

  1. A circuit with a break in it
  2. A circuit with little or no resistance to current
  3. A circuit with a very high resistance
  4. A circuit with a switch open
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Correct answer: A circuit with little or no resistance to current

A short can give high current and heat.

Source: Lessons in Electric Circuits I: DC (Kuphaldt), 1.5: Resistance

Practice dc circuits

Questions last reviewed: 18 October 2026