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scorpa

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**Really Hard Circuit Question- With LINK**

Hello there!

I am doing a really tough physics question on circuits . I am attaching the picture of the circuit so you can actually see what is going on

These are the questions:

**a) What is the current through R1?**

This one was easy I just found the total resistance of the circuit and used the equation V= IR to get a current of 2.4 A which is the answer/

**b) What is the current through R4?**

I have no clue how to do this one, no matter what I do I get an answer either to high to to low. The answer should be 0.8 A.

c) What is the power dissipated in R2?

c) What is the power dissipated in R2?

I have a feeling that I can't get this one because I can't get the one before it. The answer should be 5.1W.

d) What is the total power dissipated in the circuit?

d) What is the total power dissipated in the circuit?

I could do this one. It's just p = iv (12.0V)(2.4A) = 29W

Oh and one more really stupid thing. When you are drawing a graph and it says to plot resistance as a function of the cross-sectional area the resistance should go on the x-axis right?

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