How do you compute true power (power...

Question 1 / 20RGjZSnYlFE0G3obs3Y1r

Question 1 of 20RGjZSnYlFE0G3obs3Y1r

How do you compute true power (power dissipated in the circuit) in a circuit where AC voltage and current are out of phase?

Back

Question 1 of 20

RGjZSnYlFE0G3obs3Y1r

How do you compute true power (power dissipated in the circuit) in a circuit where AC voltage and current are out of phase?

No comments yet

Be the first to share your thoughts!

If the question has a related picture, it will appear here.

🔍 Key Concepts

• Apparent power (S) vs true (real) power (P) vs reactive power (Q) in AC circuits • Meaning of power factor (PF) and its relationship to phase angle between voltage and current • How to compute apparent power from RMS voltage and RMS current

💭 Think About

• First figure out which quantity is directly given by multiplying RMS voltage and RMS current: is that true power or something else? • Think about what power factor numerically represents in an AC circuit: is it a ratio, a difference, or a product? • Ask yourself: once you know apparent power and power factor, how would you combine them to get just the portion of power that is actually dissipated (not just circulating)?

✅ Before You Answer

• Confirm that apparent power S is measured in volt-amperes (VA) and equals Vrms × Irms • Recall that power factor = cos(φ), where φ is the phase angle between voltage and current, and that true power P is always less than or equal to apparent power S in an inductive or capacitive circuit • Eliminate any choice that would give you a value larger than apparent power when PF is less than 1, because true power cannot exceed apparent power

👋 Hi! I'm Genie, your AI study assistant. How can I help you with this question?

Quick actions

— No credit card needed

Question 1 of 20

How do you compute true power (power dissipated in the circuit) in a circuit where AC voltage and current are out of phase?

Multiply RMS voltage times RMS current.

Subtract apparent power from the power factor.

Divide apparent power by the power factor.

Multiply apparent power times the power factor.

Loading interactive features...

Question 1 / 20RGjZSnYlFE0G3obs3Y1r

Question 1 of 20RGjZSnYlFE0G3obs3Y1r

How do you compute true power (power dissipated in the circuit) in a circuit where AC voltage and current are out of phase?

Back

Question 1 of 20

RGjZSnYlFE0G3obs3Y1r

How do you compute true power (power dissipated in the circuit) in a circuit where AC voltage and current are out of phase?

No comments yet

Be the first to share your thoughts!

If the question has a related picture, it will appear here.

🔍 Key Concepts

💭 Think About

✅ Before You Answer

👋 Hi! I'm Genie, your AI study assistant. How can I help you with this question?

Quick actions

— No credit card needed