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tdk
May15-07, 06:16 PM
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?

chroot
May15-07, 06:27 PM
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

tdk
May17-07, 06:55 PM
is the equation i have to use p=I/V?

chroot
May17-07, 07:16 PM
That equation is not correct. I gave you the equation in my previous post, did you read it?

- Warren

tdk
May17-07, 07:57 PM
yes i read your post, you said P = V^2 / R. But I dont know what R is

chroot
May17-07, 07:59 PM
So, you didn't read my post in entirety. I said specifically that

P = V * I

- Warren

tdk
May17-07, 08:04 PM
Ohh yeah, I'm sorry thats what I meant to say in my previous post. I understand now,Thanks for your help!