What is the circuit current if the voltage source is 120V and the resistance is 10 ohms?

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Get ready for the NCCER Introduction to Electrical Circuits exam. Study with multiple choice questions, each question comes with hints and explanations. Ace your exam with confidence!

Multiple Choice

What is the circuit current if the voltage source is 120V and the resistance is 10 ohms?

Explanation:
Ohm's Law is at work here: current through a conductor equals voltage divided by resistance (I = V / R). With a 120 V source across a 10 Ω resistor, the current is 120 / 10 = 12 A. So the circuit current is 12 amperes. The other numbers would come from different conditions: 1 A would require only 10 V across 10 Ω, 120 A would need about 1 Ω, and 0.12 A would correspond to about 1.2 V across 10 Ω.

Ohm's Law is at work here: current through a conductor equals voltage divided by resistance (I = V / R). With a 120 V source across a 10 Ω resistor, the current is 120 / 10 = 12 A. So the circuit current is 12 amperes. The other numbers would come from different conditions: 1 A would require only 10 V across 10 Ω, 120 A would need about 1 Ω, and 0.12 A would correspond to about 1.2 V across 10 Ω.

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