can someone help me figure this out please w/ explanation? Thank you! The circui

Question

can someone help me figure this out please w/ explanation? Thank you!

The circuit diagram shows two identical voltage sources and three resistors in a network, as well as assumed current directions through the resistors. Which one of the following conditions is always correct regarding the indicated currents? I_1 + I_2 - I_3 = 0 I_1 - I_2 + I_3 = 0 I_1 - I_2 - I_3 = 0 I_1 + I_2 + I_3 = 0 None of the above. Which one of the following conditions is always correct regarding the voltage drops? I_1R_1 - I_2R_2 - I_3R_3 = 0 V - I_1R_1 - I_3R_3 = 0 V - I_1R_1 - I_2R_2 = 0 V + I_1R_1 + I_2R_2 = 0

Explanation / Answer

using kirchoff law in left loop

I3*R3 + I1*R1 - V = 0

=> V - I1*R1 - I3*R3 = 0

and also at point

I3 + I2 = I1

=> I1 - I2 - I3 = 0

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