Find the currents i1 and i2 in the circuits

[Firben]

Find the currents i1 and i2 in the circuits ,see fig.

v = iR ohms law


-1.5 + i1 + i2 = 0 kirchhoffs law

What should i do to find i1 ?


http://s716.photobucket.com/albums/ww168/Pitoraq/?action=view&current=DSC_0202.jpg

 

[azizlwl]

Find the currents i1 and i2 in the circuits ,see fig.

v = iR ohms law


-1.5 + i1 + i2 = 0 kirchhoffs law

What should i do to find i1 ?


http://s716.photobucket.com/albums/ww168/Pitoraq/?action=view&current=DSC_0202.jpg

You have written one equation with 2 unknowns.
You have to find another equation.
Use the Ohms law on parallel circuits.

 

[Firben]

Yes, but that is in the next chapter

 

[gneill]

Yes, but that is in the next chapter

Then you must have covered some other method(s). How about current dividers? KVL around a loop? Or, if you answered part (b) first and found the voltage $v_o$, could you then find the currents?

 

[Firben]

Yes, KVL around a loop, but i don't know the current

-1.5 + i1 + i2 = 0
-1.5R + 100i1 + 150i2 = 0

 

[NascentOxygen]

Yes, KVL around a loop, but i don't know the current

-1.5 + i1 + i2 = 0
[strike]-1.5R + 100i1 + 150i2 = 0 [/color][/strike][/color]

Write the equation that shows: voltage across the 100Ω = voltage across the other pair