Red Seal Electrician Practice
DC circuitsQuestion 766 of 1506

A battery has an EMF of 12 V and an internal resistance of 0.5 Ω. It feeds a 5.5 Ω load. What is the load current?

  1. 24 A
  2. 2.2 A
  3. 2 A
  4. 2.4 A
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Correct answer: 2 A

The internal resistance is in series with the load: 12 V / (5.5 Ω + 0.5 Ω) = 2.0 A.

Source: Lessons in Electric Circuits I: DC (Kuphaldt), 11.2: Battery Construction

Practice dc circuits

Questions last reviewed: 18 October 2026