DC circuitsQuestion 1323 of 1506

A 240 V heater draws 2 A. What is its resistance?

  1. 238 Ω
  2. 208 Ω
  3. 120 Ω
  4. 480 Ω
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Correct answer: 120 Ω

R = V ÷ I = 240 V ÷ 2 A = 120 Ω.

Source: Computed, 2.1: Ohm’s Law - How Voltage, Current, and Resistance Relate

Practice dc circuits

Questions last reviewed: 18 October 2026