Question

What's the real power of a purely resistive circuit in which the RMS voltage measures 80 volts and the RMS current measures 5 amps?

A. 85 watts

B. 120 watts

C. 240 watts

D. 400 watts

Answer 1

Answer:

D.400 watt

Explanation:

• B/c Pave=IrmsVrms
• Pave=(5)(80)
• Pave=400 watt

where Pave = average power

Irms=RMS current &

Vrms=RMS voltage