If a circuit has 120 volts and 10 amps, what is the wattage?

Study for the TExES Agriculture, Food and Natural Resources 6-12 Test with multiple choice questions and explanations. Prepare for your teaching exam!

Multiple Choice

If a circuit has 120 volts and 10 amps, what is the wattage?

Explanation:
Power in a circuit is found by multiplying the voltage by the current (P = V × I). With 120 volts and 10 amps, the calculation is 120 × 10 = 1,200 watts. This uses the basic relationship between voltage, current, and power, so the result is 1,200 watts. The other numbers would require different current or voltage values (for example, 120 would need 1 amp, 1,000 would need 100 volts with 10 amps or 50 volts with 20 amps, and 1,500 would need either 150 volts with 10 amps or 120 volts with 12.5 amps).

Power in a circuit is found by multiplying the voltage by the current (P = V × I). With 120 volts and 10 amps, the calculation is 120 × 10 = 1,200 watts. This uses the basic relationship between voltage, current, and power, so the result is 1,200 watts. The other numbers would require different current or voltage values (for example, 120 would need 1 amp, 1,000 would need 100 volts with 10 amps or 50 volts with 20 amps, and 1,500 would need either 150 volts with 10 amps or 120 volts with 12.5 amps).

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