Heidi
Member
Dear friends,
I have a question while I'm studying power in AC circuits. What does it mean by saying 'a heater rated 2.5KW'?
Does it mean that a rms current of I=2500/120 will flow into the heater when it is plugged into a V(rms)=120V socket? And a curent of I=2500/240 will flow into when plugged into a V=240V socket? Is 2.5KW the average power that the heater consumes?
Why is that? I thohght a heater could be treated like a resistor, how can the average power consumed be known before we know about the resistance or impedance of a resistor or equipment?
Thank you!
I have a question while I'm studying power in AC circuits. What does it mean by saying 'a heater rated 2.5KW'?
Does it mean that a rms current of I=2500/120 will flow into the heater when it is plugged into a V(rms)=120V socket? And a curent of I=2500/240 will flow into when plugged into a V=240V socket? Is 2.5KW the average power that the heater consumes?
Why is that? I thohght a heater could be treated like a resistor, how can the average power consumed be known before we know about the resistance or impedance of a resistor or equipment?
Thank you!