Red Seal Electrician Practice
DC circuitsQuestion 1352 of 1506

Two resistors, 150 Ω and 20 Ω, are connected in series across a 347 V supply. What is the voltage drop across the 20 Ω resistor?

  1. 306 V
  2. 46.3 V
  3. 173.5 V
  4. 40.8 V
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Correct answer: 40.8 V

Voltage divides in proportion to resistance: 347 V × 20 ÷ (150 + 20) = 40.8 V.

Source: Computed, 6.1: Voltage Divider Circuits

Practice dc circuits

Questions last reviewed: 18 October 2026