(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Problem 3

2. Relevant equations

3. The attempt at a solution

1) Find I and voltage across resistor 5

V=IR

12.6 = I * 5.08

I=2.48

.08*2.48= .1984

12.6-.1984= 12.4 V across battery.

So would I and V across the resistor be I=2.48 and V=12.4?

2) Find current I

(Forgot to mark, I is going clockwise)

Total resistance is 20. Would I simply add the two batteries making V=20?

V=IR 20=I20 I=1?

3) Find current through each resistor. Give magnitude and direction of current flow.

Kind of lost on this one. I have a feeling I need to do kirchoffs rule. How would I handle the battery in the center? I only have examples with the center having a resistor to go off from. The flow was also specified for me. How would I determine the flow if I am not given that information? :(

So far I took the loop counter clockwise from positive end for the top part and current heading towards the right in the center.

12V-3I(1) -6I(2) + 3V= 15V -3I(1)-6I(2) = 0

Bottom counter clockwise from negative end.

-6V-2I(3) +6I(2) -3V = 0

-9V - 2I(3)+6I(2)=0

Look anywhere right so far?

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# Homework Help: Give magnitude and direction of current flow

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