# Physics - Circuit Analysis

• Feb 11th 2011, 06:24 PM
iFuuZe
Physics - Circuit Analysis
Hi MHF

Find the value of r2 in the voltage divider, which would give an output voltage of 2.0v

Vin=6.0v
R1=3.0 (resistor)
R2=?
Vout=2.0v

the two resistors are in a line and the out voltage is take from r2
• Feb 11th 2011, 09:05 PM
mr fantastic
Quote:

Originally Posted by iFuuZe
Hi MHF

Find the value of r2 in the voltage divider, which would give an output voltage of 2.0v

Vin=6.0v
R1=3.0 (resistor)
R2=?
Vout=2.0v

the two resistors are in a line and the out voltage is take from r2

Substitute into the voltage divider formula you will undoubtedly have in your class notes or textbook. If you need more help, please show your work and say where you get stuck.
• Feb 11th 2011, 10:58 PM
Unknown008
Actually with the given information, it's impossible to get the answer, for there are infinite possibilities.
• Feb 11th 2011, 11:11 PM
mr fantastic
Quote:

Originally Posted by Unknown008
Actually with the given information, it's impossible to get the answer, for there are infinite possibilities.

Not so. There is one answer, easily found by substituting the given data into the voltage divider formula and solving the resulting equation.
• Feb 11th 2011, 11:14 PM
Unknown008
Maybe I'm misunderstanding the question then... ok. Thanks!

I think I found out what I thought it was. I thought it was like in the first diagram, where there are no solution, but there is in the second.

http://img.pokemon-universe.com/imag...6323925266.png
• Feb 12th 2011, 12:34 PM
mr fantastic
Quote:

Originally Posted by Unknown008
Maybe I'm misunderstanding the question then... ok. Thanks!

I think I found out what I thought it was. I thought it was like in the first diagram, where there are no solution, but there is in the second.

http://img.pokemon-universe.com/imag...6323925266.png

A key phrase in the OP was "voltage divider".