For a beginner who has no idea of how electricity works, this circuit lets you see some simple ratios changing within Ohm's law as different resistance is applied is series or parallel.
Shown also:
- The Resistor Tree from the examples
- Version of the Voltage Slitter
Key starting point is (I = V / R):
1A = 1V / 1Ω
There are a number of switches to turn on additional resistors in series as well as adding resistors in parallel to experiment whit the various ratios with 1V being the base vale.
What-if to experiment with:
- two 1kΩ in series
- two 1kΩ in parallel
- two 2kΩ in parallel
- one 2kΩ
- three 1kΩ in series
- three 1kΩ in parallel
- three 3kΩ in parallel
- one 3kΩ
- one 1kΩ and one 2kΩ in parallel
- two 1kΩ in series & two 1kΩ in parallel
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OHM's LAW
Voltage = Current x Resistance
V = I x R
SINGLE
I = V / R
1mA = 1V / 1kΩ
SERIES CIRCUIT
I = VT / RT
I = 1V / (1kΩ + 1kΩ + 1kΩ) = 0.333mA or 333uA
PARALLEL CIRCUIT
I = VT / RT
I = 1V / 0.333kΩ = 3mA
{RT - resistance total for parallel circuit}
(1/RT) = (1/R1) + (1/R2) + (1/R3)
(1/RT) = (1/1) + (1/1) + (1/1) = 3
RT = 1/3 = 0.333kΩ
Parallel resistor tutorial: https://www.youtube.com/watch?v=WT6wbh39MX4
COMBINED CIRCUIT
The parallel part of the circuit is added to the series part of the circuit.
I = 1V / (1kΩ + 1kΩ + 0.333kΩ) = 0.429mA or 429uA
TERMS
A - amps
mA - miliamps
uA - microamps
VT - Voltage Total
RT - Resistance Total (for parallel circuits)
