DC circuitsQuestion 327 of 1506

Two resistor groups in series, one of 15 Ω and one of 10 Ω, are connected to 100 V. What is the voltage across the 15 Ω group?

40 V
50 V
60 V
100 V

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Correct answer: 60 V

Total current is 100 ÷ 25 = 4 A. The drop is 4 A × 15 Ω = 60 V.

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

Questions last reviewed: 18 October 2026

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