Red Seal Electrician Practice
DC circuitsQuestion 1309 of 1506

A baseboard heater has a resistance of 10 Ω and draws 5 A. What is the voltage across it?

  1. 2.00 V
  2. 15.0 V
  3. 250 V
  4. 50.0 V
Show answer

Correct answer: 50.0 V

V = I × R = 5 A × 10 Ω = 50.0 V.

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

Practice dc circuits

Questions last reviewed: 18 October 2026