If a circuit carries 3 A and the conductor resistance is 4 Ω, what is the voltage drop?

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Prepare for the RMA-AMT Module 3 Test at West-MEC with engaging multiple-choice questions and comprehensive explanations. Enhance your readiness for success!

Multiple Choice

If a circuit carries 3 A and the conductor resistance is 4 Ω, what is the voltage drop?

Explanation:
Voltage drop is found with Ohm’s law: V = I × R. If 3 A flows through a conductor with 4 Ω resistance, the drop is 3 × 4 = 12 V. The other numbers would require different current or resistance values—for example, 7 V would need a different R at 3 A, 1.2 V would need a smaller R, and 0 V would mean no current or zero resistance.

Voltage drop is found with Ohm’s law: V = I × R. If 3 A flows through a conductor with 4 Ω resistance, the drop is 3 × 4 = 12 V. The other numbers would require different current or resistance values—for example, 7 V would need a different R at 3 A, 1.2 V would need a smaller R, and 0 V would mean no current or zero resistance.

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