Hello, let's say I have a parallel circuit with X resistors and I keep adding more. Why does the total resistance decrease? My logic would suggest that more resistors means higher total resistance, but that doesn't seem to be true. Can you explain this to me?
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Parallel connection
Imagine you want to change from one island to another as part of a crowd, and there is only a narrow bridge.
It takes a long time to reach their goal. But the more bridges there are (or the wider the bridge), the less time is needed. So if you switch a further parallel to a resistor, the total resistance drops.
Series
The crowd wants from island A to island C, and there is a bridge from A to B and one from B to C. Of course, everything takes so long until all people have crossed both bridges completely.
This is the scenario in which more resistors also result in a greater overall resistance. You then add more and more islands and build a bridge between the last island and the new one.
Wow. Perfect and artistic. Thank you.
If you visually imagine what a parallel connection is, it’s okay.
For example, with the bridge example.
Or with roads.
Or with water pipes. More pipes parallel, i.e. from the same starting point to the same end point, gives more outflow capacity and thus less resistance.
Yeah, it gets smaller and smaller.
A note set for a parallel connection:
The total resistance in a parallel circuit is always smaller than the smallest partial resistance.
To logic: Where is the resistance value dependent on a resistance?
Think about it and give me an answer.