Red Seal Electrician Practice
DC circuitsQuestion 418 of 1506

Three 1.5 V cells are connected series aiding. A fourth 1.5 V cell is connected with reversed polarity. What is the net voltage?

  1. 6 V
  2. 4.5 V
  3. 3 V
  4. 1.5 V
Show answer

Correct answer: 3 V

The three cells give 4.5 V. The reversed cell subtracts 1.5 V, so the net is 3 V.

Source: Electrical Fundamentals Competency (Industry Training Authority of BC), 7.3: Voltage Source Circuits

Practice dc circuits

Questions last reviewed: 18 October 2026