MadSci Network: Physics

Subject: A question about electric circuits?

Date: Thu Jan 25 03:40:31 2001
Posted by No name entered.
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Area of science: Physics
ID: 980412031.Ph

There is something I don't understand. If we have a 9 V battery cell and 
the cell is connected in a circuit with 3 bulbs, the voltage would be 
divided between the 3 bulbs so each bulb gets 3 v. If we have 2 bulbs, the 
voltage becomes 4.5v each. Why do circuits behave as it it is all preset? 
How do electrons "know" before it reaches the first bulb that it has 
another bulb alond the way and that you can only "devote" 4.5 v of 
electrical energy to the first bulb?

Re: A question about electric circuits?

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