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1. The problem statement, all variables and given/known data
the current through the toaster connected to a 120-V source is 8 A. What power is dissipated by the toaster?
2. Relevant equations
I=V/R
3. The attempt at a solution
v=120
A=8
I=(120)?
berkeman
May15-07, 06:27 PM
The relevant equation that you need is the Power in terms of the Current and Voltage. Are you familiar with that equation?
You can't use I = V/R, because that equation does not contain any reference to power!
If you assume P = V * I, then P = V^2 / R.
- Warren
is the equation i have to use p=I/V?
That equation is not correct. I gave you the equation in my previous post, did you read it?
- Warren
yes i read your post, you said P = V^2 / R. But I dont know what R is
So, you didn't read my post in entirety. I said specifically that
P = V * I
- Warren
Ohh yeah, I'm sorry thats what I meant to say in my previous post. I understand now,Thanks for your help!
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