In a circuit with 3.0 A current and 8.0 ohms resistance, what is the voltage across the circuit?

Prepare for the NLN PAX Science Exam with flashcards and multiple choice questions. Each question includes hints and detailed explanations to boost your confidence and exam readiness.

Multiple Choice

In a circuit with 3.0 A current and 8.0 ohms resistance, what is the voltage across the circuit?

Explanation:
Voltage across the circuit is 24.0 volts. This uses Ohm's law, V = I × R. With I = 3.0 A and R = 8.0 Ω, V = 3.0 × 8.0 = 24.0 V. Check: a voltage of 12.0 V would need a current of 1.5 A, 18.0 V would need 2.25 A, and 30.0 V would need 3.75 A for the same resistance. The given current and resistance only yield 24.0 V.

Voltage across the circuit is 24.0 volts. This uses Ohm's law, V = I × R. With I = 3.0 A and R = 8.0 Ω, V = 3.0 × 8.0 = 24.0 V.

Check: a voltage of 12.0 V would need a current of 1.5 A, 18.0 V would need 2.25 A, and 30.0 V would need 3.75 A for the same resistance. The given current and resistance only yield 24.0 V.

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