Red Seal Electrician Practice
DC circuitsQuestion 694 of 1506

The supply voltage to a parallel circuit is raised four times. What happens to the ratio of one branch current to the total current?

  1. It rises four times
  2. It falls to one quarter
  3. It stays the same
  4. It becomes equal to the voltage
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Correct answer: It stays the same

Every current rises by the same factor, so the ratios are fixed by the resistances only.

Source: Lessons in Electric Circuits I: DC (Kuphaldt), 6.3: Current Divider Circuits and the Current Divider Formula

Practice dc circuits

Questions last reviewed: 18 October 2026