Red Seal Electrician Practice
DC circuitsQuestion 1307 of 1506

A test load has a resistance of 25 Ω and draws 4 A. What is the voltage across it?

  1. 400 V
  2. 100 V
  3. 6.25 V
  4. 29.0 V
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Correct answer: 100 V

V = I × R = 4 A × 25 Ω = 100 V.

Source: Computed, 2.1: Ohm’s Law - How Voltage, Current, and Resistance Relate

Practice dc circuits

Questions last reviewed: 18 October 2026