DC circuitsQuestion 297 of 1506

What is the voltage drop across a 20 Ω resistor in a series circuit that carries 0.2 A?

4 V
0.01 V
100 V
12 V

Show answer

Correct answer: 4 V

E = I × R = 0.2 A × 20 Ω = 4 V.

Source: Troubleshooting Motors and Controls (Dickson-Self), 1.2: Electrical Fundamentals

Questions last reviewed: 18 October 2026

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