Reading a schematics is the most important knowledge when it comes to building a circuit. a schematics is like a circuit sketched on a piece of paper instead of being built physically.
An example of schematics.
A schematic can give an overall view of the circuit, and it can also allow an engineer to analyze a circuit without having it built.
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The Ohm's law states that when the voltage is the same, a higher resistance will lower the current in a circuit.
The Ohm's law is written as such: V = I * R (where V stands for voltage, I for current, and R for resistance.)
Both LEDs are connected in parallel. The light from the top LED is less intense as the bottom because a greater resister is connected to the top LED.
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Potentiometer is a device that changes the the voltage supplied to the circuit by changing its resistance.
A potentiometer has 3 pins. The iddle one is call the "wiper".
If you measure the resistance between the wiper and an outer pin, it will give you a difference reading as if you measure the resistance between the wiper and another outer pin. The sum of these two resistance value will be the maximum resistance of the potential meter.
You can adjust the brightness of a LED by turning the nob on the potentiometer by changing its resistance.
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A switch is a device that can connect, or disconnect, by interacting with it.
Multiple switches can be connected in a single circuit to allow the user to turn on/off electrical devices at different places with a switch.
A circuit with multiple switches.
Each time a switch is flipped, it will either turn on or off the LED depending on the state of the LED before the switch is interacted.
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Since I have run out of time today, Relay will be saved for the next day.
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