Which unit represents real electrical power in a circuit?

Study for the Texas Collections 1 Test. Review questions and in-depth explanations to enhance your understanding and boost confidence. Be prepared for your test!

Multiple Choice

Which unit represents real electrical power in a circuit?

Explanation:
Power is the rate at which electrical energy is transferred or used in a circuit. The unit that measures this rate is the watt, defined as one joule per second. In a simple DC circuit, real power is P = VI (voltage times current), or P = I^2R for a resistor. In AC circuits, real power is P = VI cos(phi), where cos(phi) is the power factor; apparent power is measured in volt-amperes (VA) and doesn’t account for power factor. So, the unit that represents real electrical power is the watt.

Power is the rate at which electrical energy is transferred or used in a circuit. The unit that measures this rate is the watt, defined as one joule per second. In a simple DC circuit, real power is P = VI (voltage times current), or P = I^2R for a resistor. In AC circuits, real power is P = VI cos(phi), where cos(phi) is the power factor; apparent power is measured in volt-amperes (VA) and doesn’t account for power factor. So, the unit that represents real electrical power is the watt.

More Multiple Choice Questions
Subscribe

Get the latest from Passetra

You can unsubscribe at any time. Read our privacy policy