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rikiki
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Homework Statement
Calculate the value of the current through the 12V battery shown in figure (attached).
Homework Equations
V = IR
I1 = I2 + I3
The Attempt at a Solution
I've calculated the current for the left hand loop, see below:
Loop 1:
E_1- E_2- V_1- V_2=0
E_1- E_2= V_1+ V_2
E_1- E_2=I(R_1+ R_2)
13-12= I (3+1)
1=4I
1/4=I
I=0.25A
I understand it's a process of doing the same to the right hand side and then subtracting the two sides? I'm just unsure as to when i should be adding the voltages and resistors and when i should be subtracting them.Is it related to the direction of the current and voltage potential? If anyone can help here it would be greatly appreciated. Thanks.