# Homework Help: Still trouble with circuits

1. Aug 31, 2009

### talaroue

1. The problem statement, all variables and given/known data

Find all the unkown R,I's, V's

2. Relevant equations
Reg=(R1*R2*R3)/(R1+R2+R3)
it=i1+i2+i3
V=IR

3. The attempt at a solution

All unknowns:
R2,R3,i1,i3 it,Vs,V1,V2

It seems that I need one more bit of information to solve any variables
i1 goes across R1, i2 goes across R2, i3 across R3

2. Aug 31, 2009

### Staff: Mentor

Hint: Since the three resistors are in parallel, what's the voltage across each? (And the battery voltage, for that matter.)

3. Aug 31, 2009

### talaroue

Since they are parrallel the voltage across each is equal to each other? Vs=V1=V2=V3 is this right?!? Also why is that?

4. Aug 31, 2009

### Staff: Mentor

Last edited by a moderator: Apr 24, 2017
5. Aug 31, 2009

### talaroue

Ok thank you knowing this concept this should be an easy one......I have another simple question though.I will post the picture and work in a new thread that I will pm you, can you just come teach my class for me? Your anwsers are so much more simplier then the ones provided by my professor.

6. Aug 31, 2009

### talaroue

Last edited by a moderator: Apr 24, 2017