Red Seal Electrician Practice
DC circuitsQuestion 763 of 1506

What decides the voltage of one cell?

  1. The length of its terminals
  2. The temperature of the room only
  3. The colour of the case
  4. The chemical reaction of that cell type
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Correct answer: The chemical reaction of that cell type

Each cell type has its own voltage from its chemistry. A lead-acid cell, for example, gives about 2 V.

Source: Lessons in Electric Circuits I: DC (Kuphaldt), 11.1: Electron Activity in Chemical Reactions

Practice dc circuits

Questions last reviewed: 18 October 2026