In a circuit with a 12 V source and a 3 Ω resistor in series, what is the current?

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Study for the Con Edison Basic Electric Test. Prepare with flashcards and multiple choice questions, each question has hints and explanations. Get ready for your exam!

Multiple Choice

In a circuit with a 12 V source and a 3 Ω resistor in series, what is the current?

Explanation:
Ohm’s law is being tested here: current equals voltage divided by resistance. In this simple setup, the 12 V source is applied across a 3 Ω resistor, so the current through the circuit is I = 12 V / 3 Ω = 4 A. This is the value that matches the given voltage and resistance. The other numbers come from using different denominators or misapplying the division, but with the stated values the correct result is 4 amperes.

Ohm’s law is being tested here: current equals voltage divided by resistance. In this simple setup, the 12 V source is applied across a 3 Ω resistor, so the current through the circuit is I = 12 V / 3 Ω = 4 A. This is the value that matches the given voltage and resistance. The other numbers come from using different denominators or misapplying the division, but with the stated values the correct result is 4 amperes.

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