Hello everyone, this is my first problem dealing with Kirchoffs Rule and I thought I did it right...here is the circuit...(adsbygoogle = window.adsbygoogle || []).push({});

http://www.webassign.net/hrw/hrw7_27-40.gif

the info is the following:

In Figure 27-40, the resistances are R1 = 1 , R2 = 2.2 , and the ideal batteries have emfs E1 = 2.0 V, and E2 = 3 = 3 V.

Fig. 27-40

(a) What is the current through each battery? (Take upward to be positive.)

battery 1 A

battery 2 A

battery 3 A

(b) What is the potential difference Va - Vb?

V

I came out with the following 3 equations:

E1 + (-R1)(I_1) + R2*I_2 - E2 -R1*I_1;

-R2*I_2 + R1*I_3 - E3 + R1*I_3 + E2;

I_1 + I_2 + I_3 = 0;

When i solve for I_1 = -I_2 -I_3

Where do I plug I_1 into? i tried the first equation and i couldn't solve for any I, and i can't for the 2nd, because there is no I_1, did i do this right? thanks!

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# Homework Help: Hello everyone, having troulbes applying Kirchoff's Rule~DC circuits

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