- #1
brad sue
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Hi ,please Can I have some suggestions to do this exercice:
A simple potentiometer circuit used to measure unknown voltages accurately is shown below.
Here Vs is the known source voltage, Vxis the unknown voltage, and the resistor is a variable one from which the values R1 and R2 can be read from the position of the pointer. these resistances are varied until the current in the ammeter is zero. Show that the unknown voltage then has the value Vx=Vs*R2/(R1+R2).
I can not create a picture.
Thank you
B
A simple potentiometer circuit used to measure unknown voltages accurately is shown below.
Here Vs is the known source voltage, Vxis the unknown voltage, and the resistor is a variable one from which the values R1 and R2 can be read from the position of the pointer. these resistances are varied until the current in the ammeter is zero. Show that the unknown voltage then has the value Vx=Vs*R2/(R1+R2).
I can not create a picture.
Thank you
B