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

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

anonymous · Answer

do you u have a formula?

anonymous · Answer

@rg40016

anonymous · Answer

no :/ I got it off from plato

anonymous · Answer

hmm let me see if I can find one.

anonymous · Answer

use this formula:

power = amps (a)
voltage = (v)
ohms = (o)

voltage / ohms = amps or power

insert the known values and solve.

kropot72 · Answer

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