DC circuitsQuestion 718 of 1506

A circuit needs 24 V DC. Only 6 V batteries are available. How should they be connected?

  1. Four in series
  2. Six in series
  3. Two in series and two in parallel
  4. Four in parallel
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Correct answer: Four in series

Series cells add their voltages: 4 × 6 V = 24 V.

Source: Lessons in Electric Circuits I: DC (Kuphaldt), 7.5: Building Series-Parallel Resistor Circuits

Practice dc circuits

Questions last reviewed: 18 October 2026