Red Seal Electrician Practice
DC circuitsQuestion 328 of 1506

Two parallel 30 Ω resistors form a 15 Ω group. It is in series with a 10 Ω group on 100 V, so the group has 60 V across it. What current does one 30 Ω resistor carry?

  1. 2 A
  2. 1.33 A
  3. 3.33 A
  4. 4 A
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Correct answer: 2 A

The parallel resistors share the same 60 V, so I = 60 V ÷ 30 Ω = 2 A.

Source: Troubleshooting Motors and Controls (Dickson-Self), 2.1: Combination Series and Parallel Circuits

Practice dc circuits

Questions last reviewed: 18 October 2026