R"Find Power Dissipated by 8A Toaster Connected to 120V Source

[tdk]

Homework Statement

the current through the toaster connected to a 120-V source is 8 A. What power is dissipated by the toaster?

Homework Equations

I=V/R

The Attempt at a Solution

v=120
A=8
I=(120)?

 

[berkeman]

The relevant equation that you need is the Power in terms of the Current and Voltage. Are you familiar with that equation?

 

[chroot]

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]

is the equation i have to use p=I/V?

 

[chroot]

That equation is not correct. I gave you the equation in my previous post, did you read it?

- Warren

 

[tdk]

yes i read your post, you said P = V^2 / R. But I don't know what R is

 

[chroot]

So, you didn't read my post in entirety. I said specifically that

P = V * I

- Warren

 

[tdk]

Ohh yeah, I'm sorry that's what I meant to say in my previous post. I understand now,Thanks for your help!