4 ms·
Given that : V = I x R Where: V = voltage I = current R = resistence For this circuit: R = VR1 + R2 V = 5 I
by jussij 18y ago
Given that : V = I x R
Where: V = voltage
I = current
R = resistence
For this circuit: R = VR1 + R2
V = 5
I = 5 / (VR1 + R2)
That means the voltage at analog pin 0: VO = 5 - I * VR1 = 5 - VR1 * 5 / (VR1 + R2)
So if you did not have the R2 resistor: VO = 5 - VR1 * 5 / VR1 = 0