A microwave uses 9.6 ohms and operates on a 120 volt circuit. How much current does it draw?

Question

1210 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2017-08-12T09:55:50

#12.5# amperes

For this problem, let's use Ohm's law; #V = I R#:

In the equation #V = I R#, #V# is the voltage, #I# is the current, and #R# is the resistance.

We need to find the amount of current the microwave draws.

So let's solve the equation for #I#:

#Rightarrow V = I R#

#Rightarrow frac(V)(R) = frac(I R)(R)#

#Rightarrow frac(V)(R) = I#

#therefore I = frac(V)(R)#

Now, let's substitute the relevant values into the equation:

#Rightarrow I = frac(120 " V")(9.6 " " Omega)#

#Rightarrow I = 12.5# #"V"# #Omega^(- 1)#

#therefore I = 12.5# #"A"#

Therefore, the current it draws is #12.5# amperes.