Question

Electrical Engineering ,

Can you please help me with this?
https://www.dropbox.com/s/jrrk8qv9p359um6/Screenshot%202013-10-31%2000.27.33.jpg

I am totally new to EE !

Answer 1

@agent0smith

Answer 2

@dan815

Answer 3

@e.mccormick

Answer 4

@Emily778

Answer 5

@Hero

Answer 6

@LoveYou*69

Answer 7

And if you want to know the answers: https://www.dropbox.com/s/n0ag4mnhji1mo54/Screenshot%202013-10-31%2001.17.55.jpg

I Know the answers I just want the method

Answer 8

Know your parallel and series rules?

Answer 9

Partly dude :S Today is my very first day on EE

Answer 10

if a resistor is in the middle you divide

Answer 11

if there is e1 up and e2 does you say e1 - e2 / R

Answer 12

or something

Answer 13

down*

Answer 14

For simple circuits, you can use the basic rules:
http://physics.bu.edu/py106/notes/Circuits.html

Answer 15

The voltage at any point is related to the resistance....

Hmm... for more complex solutions I have gone over a way to do it using linear algebra, but did not practice that a ton.

Answer 16

I can use the LMD

Answer 17

Looking at this, it seems to explain the right formulas for doing this:
http://www.facstaff.bucknell.edu/mastascu/elessonshtml/Resist/Resist2.html

I went software rather than hardware, so my engineering knowledge is limited. =/ In fact, what I know has to do with what I had to learn for radio-electronics. LOL

Answer 18

haha I see, np dude its ok : P

Answer 19

I can kinda do this but wouldn't be able to explain it too well as it's been a few months since i last tutored someone in this, but you have to use kirchoff's voltage laws, add up the voltages around each loop.

Answer 20

I know its something with this law but I don't know what and why :p

Answer 21

You have to treat each "loop" separately, and add up the voltages around each loop. Take into account direction.
eg bottom right loop:

KVL says that the sum of voltages around a loop is zero
v3 + v5 - v2 = 0

Answer 22

so I can find v5 from this equation you just did ?

Answer 23

Yes. And do the same thing for all other loops

Answer 24

oh wait I don't have the value of v2 as well

Answer 25

Keep solving loops and substituting when you find something you know

Answer 26

can you tell me what other loops can you see ?

Answer 27

4 would be the whole loop, i think KVL still applies to it too...