modified 5 years ago

simple parallel n series1

00:59:18

Why in 1 kv applied that 2 led didnt light.tell me robert sir.

published 5 years ago

Robert_Kidd

5 years ago

Because you have a single led in parallel with the two in series. This means you only have 2V across the series ones, giving 1V across each of them. They each need 2V across them to illuminate.

Robert_Kidd

5 years ago

In the right hand circuit the lamps in series still light but are much less bright. Also the top lamp is rated at 1.5V but you have 3V across it!

jebajenifa

5 years ago

tell me i gave 1kv but that 2 led didnt light up with only small amount resistance

Robert_Kidd

5 years ago

The volt drop across the single led will remain around 2V, that’s physics. In the simulator the volt drop across it has risen to around 3V, still not the 4V you would need to light up the two series LED’s. In real life the single led would be destroyed long before you got anywhere near that crazy voltage. Then, with the single led gone, the other two would have blown up too.

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