Please help!
A 30.0-V potential difference is applied across a parallel combination of a 60.0-ohm and a 10.0-ohm resistor. What is the current in the 10.0-ohm resistor? Show your work.

Question

Please help!
A 30.0-V potential difference is applied across a parallel combination of a 60.0-ohm and a 10.0-ohm resistor. What is the current in the 10.0-ohm resistor?  Show your work.

anonymous · Answer

Medals will of course be given once I know it's the right answer :)

roadjester · Answer

|dw:1392575489276:dw|
Is this the image?

anonymous · Answer

No image came with it

roadjester · Answer

Ok, so ASSUMING that is the image. The voltage difference across both resistors is the same. So just apply ohm's law.

anonymous · Answer

I = v/r?
I = 30/10?
I = 3amps?

anonymous · Answer

Is that right? If no please help me with the basic equation.

roadjester · Answer

yes

anonymous · Answer

Ok thanks!! Once it gets graded, and if it is right, I'll give the medal. :)

roadjester · Answer

Ok sure

anonymous · Answer

Wait! to figure out the current you have to find the combined resistance before applying ohms law. with only 2 resistors the formula is easy.$$\frac{R1*R2 }{ R1 +R2 }$$ which I calculate to be 8.571 ohms. Take 30v / 8.571 = 3.5 amps