- #1
kaspis245
- 189
- 1
Homework Statement
It is known that total resistance of the circuit is dependent on the position of the wiper in potentiometer ##R##. Find the biggest and the smallest possible total resistances of the circuit. Potentiometer resistance is ##R=9r##.
Homework Equations
Ohm's law.
The Attempt at a Solution
Here's a redrawn image:
where ##R_1+R_2=R##.
This circuit reminds me of Wheatstone Bridge, so I approached the problem like this:
##V_1=\frac{2r+R_1}{3r+R_1}V##
##V_2=\frac{r+R_2}{4r+R_2}V##
I don't know what to do from here.