What is the formula to calculate power in watts when given volts and amps?

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

What is the formula to calculate power in watts when given volts and amps?

Explanation:
Power in an electrical circuit is the rate at which energy is transferred, and it is found by multiplying the voltage by the current. This gives P = V × I, so the power in watts equals volts times amperes. For example, a circuit with 120 volts and 3 amperes results in 360 watts of power. Adding or subtracting voltage and current mixes different quantities and doesn’t represent energy transfer, and dividing voltage by current would give resistance, not power.

Power in an electrical circuit is the rate at which energy is transferred, and it is found by multiplying the voltage by the current. This gives P = V × I, so the power in watts equals volts times amperes. For example, a circuit with 120 volts and 3 amperes results in 360 watts of power. Adding or subtracting voltage and current mixes different quantities and doesn’t represent energy transfer, and dividing voltage by current would give resistance, not power.

More Multiple Choice Questions
Subscribe

Get the latest from Passetra

You can unsubscribe at any time. Read our privacy policy