- #1

- 3

- 0

## Homework Statement

The problem that is that of a loaded potentiometer and the position on the slider. The question is that a 10k Ohm potentiometer is connected across a 9 volt dc supply. Across the bottom part of the POT a 5k Ohm resistive load is connected which has 3 volts developed across it. Decide the position of the slider on the potentiometer to get 3 Volts across the load.

## Homework Equations

VL = Vs*(R1/R1+R2) Where R1 it the top of the POT and R2 is the Bottom of the POT with the load across it

## The Attempt at a Solution

I have got this far and tried many attempts at solving for x. I understand that it will be a proportion or ratio of the POT resistance.

[(x*Rp)*RL/(x*Rp)+RL]

VL=Vs* _________________________ Where VL = Voltage Load

[(x*Rp)*RL/(x*Rp)+RL]+(1-x)RL Vs = Voltage Supply

Rp = Res Potentiometer

RL = Res Load

I would much appreciate it if somebody knows if I'm taking the right approach and if so how on Earth do I solve for x. Just basic steps would be helpful. Every time I try to do it I just end up in a complete mess. It's driving me crazy.

https://physicsforums-bernhardtmediall.netdna-ssl.com/data/attachments/60/60520-9dbe04eb6c8910a17f39930ad611a216.jpg [Broken]

#### Attachments

Last edited by a moderator: