# How to calculate voltage at a specific resistor

1. Jun 1, 2010

### Gardalay

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

How would you calculate the voltage at a specific resistor given that it's a parallel circuit.

Last edited: Jun 1, 2010
2. Jun 1, 2010

### tiny-tim

Welcome to PF!

Hi Gardalay! Welcome to PF!

Use Kirchhoff's rules to find the current through it, and then use Ohm's law

(but what exactly is the question?)

3. Jun 1, 2010

### Gardalay

If the 25ohm resistor in figure19-39 were shorted out, what then would be the current through the 10ohm resistor?

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4. Jun 1, 2010

### tiny-tim

Call the currents through each section i1 i2 i3 etc, and apply Kirchhoff's rules …

what do you get?

5. Jun 1, 2010

### Gardalay

I got 7.14amps with the 25ohm resistor and 6.9amps without the 25ohm resistor.

6. Jun 1, 2010

### tiny-tim

Show your calculations if you want us to check them!

7. Jun 1, 2010

### Gardalay

ok, i finally got this figured out, thanks for the help