Red Seal Electrician Practice
DC circuitsQuestion 782 of 1506

Three 12 V, 100 Ah batteries are connected in parallel. What are the bank voltage and the amp-hour capacity?

  1. 12 V and 300 Ah
  2. 36 V and 100 Ah
  3. 36 V and 300 Ah
  4. 12 V and 100 Ah
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Correct answer: 12 V and 300 Ah

Parallel connection keeps the voltage and adds capacity.

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

Practice dc circuits

Questions last reviewed: 18 October 2026