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## Homework Statement

for S1,S2,S3,S4 are all closed at the long time

find the current in each resistor

## Homework Equations

## The Attempt at a Solution

why I3 is not = i2?

the solution of this question is

24-28I

_{1}-I

_{2}12-12=0

7

**I**

_{1}-3

12-12I_{2}=3-----(1)12-12I

_{2}-16

3I_{3}=03I

_{2}+4

I1+I2-I3=0---(3)

_{3}=3 ---(2)I1+I2-I3=0---(3)

I1=0.492 I2=0.148 I3=0.639[/B]

why there are 3 current in 2loop and I2 is not =I3 and why at the top loop

the equation is not

**24-28I**

_{1}-[I**I**_{1}-_{2}]12-12=0???