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need help in some basics

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djfaisal

New Member
Hello

Please help in this question regarding parallel circuits.

Q: why the total ressitance in parallel circuits are less than the smallest resistor value? please explain with logical reason.




Regards
 

BrownOut

Banned
Just think about it. You add a path for conduction. Some of the electrons that were crowded in the original path will use the new one. It's like when you're waiting in the chekcout line at the market, and they open another register. Many of the customers who were waiting in the original line rush to the new one, and everyone goes through faster.
 

ke5frf

New Member
Great analogy!!!! I love mental pictures. I'll remember that one.

To BrownOut:

Another example is water faucets in your home.

If you take two 5 gallon buckets to your faucets (kitchen and bathroom) and open the valves, you will get 10 gallons much quicker than you would if you only opened the kitchen faucet and filled them both.

The two faucets are in parallel off of your water supply manifold in your home. Opening both faucets doubles the flow of water, thus your water resistance is AT LEAST HALF of what it is when only one faucet is open. If one valve has more flow by nature (like a bathtub), it also has the least resistance. So opening another valve (the kitchen sink) decreases the overall resistance to the point it is LESS than the bathtub resistance alone.

Does this help or make sense?
 
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