DC circuitsQuestion 556 of 1506

Which component works the same with current in either direction?

  1. A diode
  2. A polarized device
  3. A semiconductor rectifier
  4. An incandescent lamp
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Correct answer: An incandescent lamp

Lamps, switches and wires are nonpolarized.

Source: Lessons in Electric Circuits I: DC (Kuphaldt), 1.7: Conventional Versus Electron Flow

Practice dc circuits

Questions last reviewed: 18 October 2026