Question

A toaster is plugged into an 120-volt outlet. If it has a resistance of 460 ohms, how much power does it use?



1,800 watts



3.8 watts



31 watts



55,000 watts



340 watts

Answer 1

do you u have a formula?

Answer 2

@rg40016

Answer 3

no :/ I got it off from plato

Answer 4

hmm let me see if I can find one.

Answer 5

use this formula:

power = amps (a)
voltage = (v)
ohms = (o)

voltage / ohms = amps or power

insert the known values and solve.

Answer 6

The simplest way to find the power is to use the formula:
\[\large P=\frac{V^{2}}{R}=\frac{120^{2}}{460}\ watts\]