Your toaster has a power cord with a resistance of 2.2x10^−2 ω connected in series with a 9.7 ω nichrome heating element. the potential difference between the terminals of the toaster is 120 v.
1. how much power is dissipated in the power cord?
pcord = w
2. how much power is dissipated in the heating element?
phe= kw

(A) 654.545 Kw

(B)

Explanation:

We have given resistance of the toaster

Resistance of nichrome heating element

Both the resistances are connected in series so same current will flow through the circuit

Potential difference across the toaster V = 120 volt

So current

(a) Power dissipated in toaster

(B) Power dissipated in heating element  

answer: the metamorphic rocks are formed when they are exposed to high pressure and high temperatures. this happens when one of the earth's plates comes in contact with the other plate by traveling in opposite directions, straight into each other or slipping under one another. the friction that is caused by this activity results in   melting of rocks and when it cools they are known as metamorphic rocks. this process needs a controlled amount of pressure and temperature otherwise it may turn into magma.

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