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

Hi there, I just want to see if I am doing these questions correctly. Any help with this would be great. The question and circuit diagram are in the attachment. Cheers

2. Relevant equations

Kirchoff's Laws for voltage and current. I'm not too sure if there is an equation, you just have to remember that the total current in a node is the same as the input. And for a loop, the total voltage drop = 0.

3. The attempt at a solution

I said that for loop one, on the left:

60=I_{1}20 + I_{2}10

For loop two, since the two 20 ohm resistors are effectively one 10 ohm resisitor:

20=I_{2}20 + I_{1}10

Subing I_{2}into the first equation, you get an answer of 1.75A for I_{1}

which gives I_{2}=2.5A

Hence a current of4.25Aand voltage of43.75V

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# Homework Help: Kirchoff's Laws Two Batteries

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