DC circuitsQuestion 641 of 1506

What is the conductance of a 4 Ω resistor?

  1. 0.25 S
  2. 4 S
  3. 0.4 S
  4. 16 S
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Correct answer: 0.25 S

Conductance is the reciprocal of resistance: G = 1/R = 1/4 = 0.25 S.

Source: Lessons in Electric Circuits I: DC (Kuphaldt), 5.4: Conductance

Practice dc circuits

Questions last reviewed: 18 October 2026