Red Seal Electrician Practice
DC circuitsQuestion 781 of 1506

Two 12 V, 50 Ah batteries are connected in series. What are the bank voltage and the amp-hour capacity?

  1. 24 V and 100 Ah
  2. 24 V and 50 Ah
  3. 12 V and 100 Ah
  4. 12 V and 50 Ah
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Correct answer: 24 V and 50 Ah

Series connection adds voltage but does not add amp-hour capacity.

Source: Lessons in Electric Circuits I: DC (Kuphaldt), 11.5: Practical Considerations - Batteries

Practice dc circuits

Questions last reviewed: 18 October 2026