I got 200 ohms for the resistor at A but whatever i do to find Va, Vb, Vc doesnt make senseA big hint is the three resistors from battery to B can be replaced by a single equivalent resistance.
Don't worry about maintaining the integrity of Node A (or any of the nodes) for now. First find the total amount of current flowing in the battery. Once you know that you know the current in some of the resistors and can walk the voltage drops from a known voltage (one side or the other of the battery) to one of the nodes to find the voltage at that node. Do that for as many nodes as you can. Then use that new knowledge to tease out the rest of the voltages.I get a 200 ohm resistor when you simplify the parallel part, but my concern is that does the resistor get placed on the left or right side of the "A" node
Correct!I got 200 ohms for the resistor at A but whatever i do to find Va, Vb, Vc doesnt make sense
Giving an answer, especially without explanation, teaches nothing."Now you have three resistors in series, 200, 100 and 100 ohms."
Now you have two resistors in series, 200, 200 ohms.And Vb between them.
So Vb is half the supply voltage Vb= 6V.
Vc is half this 6V, so Vc=3V.
Va it is between R1=100ohms and R2=300ohms:
R1 have a quarter and R2 have three-quarters form a voltage difference between V+ and Vb, that is 6V.
6/4V on R1 => Va=12V-1.5V
Please check the solving, I wrote in haste.
But this is not the way to solve. you have to apply the formulas and learned rules.
Difference between V+ and Vb =6V
by Luke James
by Luke James
by Gary Elinoff
by John Koon