How to calculate voltage drop across series resistors.
Step 1
Determine current of total resistors across the series.
Step 2
Now that we have the Current across the resistors we can calculate the voltage across EACH resistor.
Also If the resistors are all the same value its easier.
So just add them up:
I = V / R(t)
I = 9 / (5k + 5k + 5K)
I = .6 mA
THEN:
V = I x Rx
V1 = .6 mA x 5k
V1 = 3V
so since all Resistors are same value:
V2 = 3V
V3 = 3V
Also To get different values for like switches just use gnd as a start point and the end of each resistor and a end point. This way you get 3 switches from this each having different voltages
SW1 = 3V
SW2 = 6V
SW3 = 9V
So I hope someone can learn something from this.
Step 1
Determine current of total resistors across the series.
(I = Current/V=Voltage/R(t)=Resistance Total)
I = V / R(t)
I = 9 / (2k + 5k + 10K)
I = .53 mA
I = V / R(t)
I = 9 / (2k + 5k + 10K)
I = .53 mA
Step 2
Now that we have the Current across the resistors we can calculate the voltage across EACH resistor.
I = Current
Vx = Voltage (x = Current Value across X Resistor)
Rx = Resistor value(x = resistor#)
V = I x Rx
V1 = .53 mA x 2k
V1 = 1.06V
V2 = .53 mA x 5k
V2 = 2.65
V3 = .53 mA x 10k
V3 = 5.3V
V1 + V2 + V3 = 9.01 (voltage is 9V only 9.01 because i rounded up from .529 to .53) At .529 you can see barely a difference:
V1=1.058V
V2=2.645V
V3=5.290V
V Total= 8.993V
Vx = Voltage (x = Current Value across X Resistor)
Rx = Resistor value(x = resistor#)
V = I x Rx
V1 = .53 mA x 2k
V1 = 1.06V
V2 = .53 mA x 5k
V2 = 2.65
V3 = .53 mA x 10k
V3 = 5.3V
V1 + V2 + V3 = 9.01 (voltage is 9V only 9.01 because i rounded up from .529 to .53) At .529 you can see barely a difference:
V1=1.058V
V2=2.645V
V3=5.290V
V Total= 8.993V
Also If the resistors are all the same value its easier.
So just add them up:
I = V / R(t)
I = 9 / (5k + 5k + 5K)
I = .6 mA
THEN:
V = I x Rx
V1 = .6 mA x 5k
V1 = 3V
so since all Resistors are same value:
V2 = 3V
V3 = 3V
Also To get different values for like switches just use gnd as a start point and the end of each resistor and a end point. This way you get 3 switches from this each having different voltages
SW1 = 3V
SW2 = 6V
SW3 = 9V
So I hope someone can learn something from this.
