Calculate voltage and position of the slider

  • #1
Edy56
38
5
Homework Statement
A total resistance potentiometer is used in the circuit in Figure 1
R POT = 10 kΩ which changes linearly from position 0 to position 1. If R= 5 kΩ, VCC= 5 V, determine:
(a) voltage value V OUT when the slider of the potentiometer is in position 0.5;
(b) position the potentiometer slider so that V OUT= 3 V.
Relevant Equations
None
Is my work correct?
I got confused whether the current Splits or not, but i decided against it.
IMG_20230604_224627.jpg
 
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  • #2
Edy56 said:
Is my work correct?
Yes.

Edy56 said:
I got confused whether the current Splits or not, but i decided against it.
An unloaded potential divider, divides the voltage.
The same current flows through both series resistors.

For part b, I solved it differently, to get the same answer.
Computed current; i = (5V - 3V ) / 5k ;
Then R = 3V / i ;
 
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  • #3
Baluncore said:
Yes.An unloaded potential divider, divides the voltage.
The same current flows through both series resistors.

For part b, I solved it differently, to get the same answer.
Computed current; i = (5V - 3V ) / 5k ;
Then R = 3V / i ;
Thank you
 

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