#ELECTRICITY
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you dont need source to find R eq
Yes in this one we don't ig but like how do u identify which one is in series and which one isn't
the three 12 ohm resistors and the one 6 ohm resistor between A and B are in parallel, so you can replace them with a resistor of 12/5 ohms
Now there is one more 6 ohm resistor between G and C
That resistor is in parallel with AOC
so that can be written as (1/3+1/6)^-1 which is 2 ohms
this 2 ohm resistor is in series with the 10 ohm resistor
so that's now a 12 ohm resistor
Finally you have 12/5 ohms and 12 ohms in parallel with one another which if you solve you get 2 ohms