DC circuitsQuestion 576 of 1506

What does the physical size of a resistor mainly indicate?

  1. Its resistance in ohms
  2. Its tolerance
  3. Its power rating
  4. Its voltage
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Correct answer: Its power rating

Bigger resistors dissipate more power. Size says nothing about ohms.

Source: Lessons in Electric Circuits I: DC (Kuphaldt), 2.5: Resistors

Practice dc circuits

Questions last reviewed: 18 October 2026