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Hello Everyone! This is an LED dimmer Circuit. When you press the potentiometer and then the Wrench icon, you can adjust the potentiometer. As we adjust it, the Resistance value coming from the Potentiometer changes. If you connect that changing resistance to an LED, the LED dims or brightens depending on the position of the wiper of the potentiometer.
As Resistance increases, voltage also changes. You can tell this because of Ohms Law where when the Resistance changes, the voltage also drops or increases. On the Graph above, you can see that when we Brighten the LED, the voltage graph line goes higher, which indicates higher voltage. When we dim it, the voltage decreases (The graph line drops)
Lastly, you can tell that when lesser voltage is there, the less current. This is because voltage is the Potential Energy or the driving force of current. So, that means, when there is less current, there is not enough power to light up the LED a ton. So, that is why when the wiper is down, the LED is dimmer. Also, you can add an Amperage Meter to the LED to see the current but note that the LED will not glow
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