57 537
Assignments Done
98,8%
Successfully Done
In February 2018
Your physics homework can be a real challenge, and the due date can be really close — feel free to use our assistance and get the desired result.
Be sure that math assignments completed by our experts will be error-free and done according to your instructions specified in the submitted order form.
Our experts will gladly share their knowledge and help you with programming homework. Keep up with the world’s newest programming trends.

Answer on Electric Circuits Question for gabby

Question #15836
A 550-W space heater is designed for operation in Germany, where household electrical outlets supply 230V (rms) service. what is the power output of the heater when plugged into a 120-V (rms) electrical outlet in a house in the united states? ignore the effects of temperature on the heaters resistance.
Expert's answer
Let's find the current consumed by the heater in normal use:

P = UI ==> I = P/U = 550[W]/230[V] ≈ 2.39[A].

Let's find the resistance of a heater:

P = I²R ==> R = 550[W]/(2.39[A])² ≈ 96.29[Ω].

The current consumption when plugged into a 120-V electrical outlet will be

I = U/R = 120[V]/96.29[Ω] ≈ 1.25[A].

So, the power output of the heater when plugged into a 120-V electrical outlet will be

P = I²R = (1.25[A])² * 96.29[Ω] ≈ 150[W].

Need a fast expert's response?

Submit order

and get a quick answer at the best price

for any assignment or question with DETAILED EXPLANATIONS!

Comments

No comments. Be first!

Leave a comment

Ask Your question