What is the voltage across a 6 Ω resistor when the current is 2 A?

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Multiple Choice

What is the voltage across a 6 Ω resistor when the current is 2 A?

Explanation:
The voltage across a resistor comes from Ohm’s law: V = I × R. With a current of 2 A flowing through a 6 Ω resistor, the voltage is V = 2 × 6 = 12 volts. So the resistor drops 12 volts. If you imagine what would be needed for the other numbers: 6 V would require a current of 1 A through 6 Ω, 8 V would need about 1.33 A, and 4 V would need about 0.67 A. Since the current is fixed at 2 A, the 12 V result fits exactly.

The voltage across a resistor comes from Ohm’s law: V = I × R. With a current of 2 A flowing through a 6 Ω resistor, the voltage is V = 2 × 6 = 12 volts. So the resistor drops 12 volts.

If you imagine what would be needed for the other numbers: 6 V would require a current of 1 A through 6 Ω, 8 V would need about 1.33 A, and 4 V would need about 0.67 A. Since the current is fixed at 2 A, the 12 V result fits exactly.

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