What is the current in a circuit with a 12 V source and a 4 Ω resistor?

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Multiple Choice

What is the current in a circuit with a 12 V source and a 4 Ω resistor?

Explanation:
Ohm's law: current equals voltage divided by resistance. I = V/R. With 12 volts across a 4-ohm resistor, the current is 12/4 = 3 amperes. So the circuit carries 3 A. This assumes an ideal circuit with a single loop and no other elements; in general, higher resistance lowers current and higher voltage raises it.

Ohm's law: current equals voltage divided by resistance. I = V/R. With 12 volts across a 4-ohm resistor, the current is 12/4 = 3 amperes. So the circuit carries 3 A. This assumes an ideal circuit with a single loop and no other elements; in general, higher resistance lowers current and higher voltage raises it.

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