Kirchoff's voltage law: the voltage around a loop must sum to zero.
2006-08-11 01:42:34
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answer #1
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answered by Anonymous
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Ok, a good piece of wire always has the same voltage potential, right? A wire is a conductor, so this has to be the case.
So... look at a simple parallel circuit (a battery and two resistors in parallel). A wire extends from the positive terminal of the battery to the two resistors. That piece of wire has the same voltage potential throughout it. Similarly, the wire that extends from the negative terminal to the other ends of the resistors has the same voltage potential throughout it. The difference between the voltage potentials of these two pieces of wire is the voltage rating of the battery (it has to because the battery is a voltage source). Thus, the resistors must have the same voltage applied across them in a parallel circuit (no matter how many elements you add in parallel).
Or, you could just apply Kirchoff's law to any loop in the circuit. That will also dictate that the voltage across the resistors must be the same as the voltage source.
2006-08-11 02:47:31
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answer #2
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answered by Ubi 5
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Its just like water with the voltage being the pressure. The circuits are tied together at both ends of the parrallel circuit. Where the wires are tied together the voltage (potential) has to be the same, therefore the voltage drop is the same for all the parallel circuits.
Just as water in a tee all has to be at the same pressure reguardless of what route it arrived at the tee.
2006-08-11 06:47:50
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answer #3
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answered by Roadkill 6
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Get this simpler:
There is no voltage drop through the circuit unless it passes from an impedance (resistance and/or reactance), in this case the potential remains the same and hence the voltage in parallel elements will remain the same too,
Got it?
2006-08-11 05:49:37
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answer #4
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answered by Ngini 1
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Voltage = electrostatic ability distinction. think component A is grounded and component B has an electrostatic ability of 5 volts greater desirable than component A. consequently the voltage between component A and component B is 5 volts. you could then connect as many circuits to point A and component B and the aptitude distinction continues to be 5 volts. in spite of the incontrovertible fact that, as you connect greater circuits to the voltage source, you draw greater contemporary out of the voltage source. Batteries are in fact charged capacitors. They discharge as contemporary is drawn out of the meaning that the voltage for the duration of it decays exponentially. think of of voltage as height. floor is at sea point and the precise of the cliff is X meters above sea point. no remember how many bridges we build from the precise of the cliff to different factors, the heght of the cliff continues to be X meters.
2016-12-11 06:52:02
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answer #5
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answered by ? 4
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Voltage is the electromotive force in a circuit. It is a constant throughout the circuit unless it is subjected to a resistor.
2006-08-11 01:47:17
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answer #6
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answered by J.D. 6
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Marianna said "The current is different in every branch of a parallel circuit."
Only if every branch has a different resistance or impedance.
If they have identical values then the current through each branch will also have an identical value.
2006-08-11 06:54:38
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answer #7
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answered by dmb06851 7
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Of course, voltage is just a potential, it doesn't "do" anything on its own.
The current is different in every branch of a parallel circuit.
2006-08-11 01:44:03
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answer #8
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answered by Marianna 6
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low resistance absorbs high current by the way high resistance absorbs low current so that you know voltage is the product of two there is proportionality comes from kirchhoff's laws.
2006-08-11 01:46:48
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answer #9
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answered by blindson 1
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its like distance...you increase speed you reach earlier...but distance is not reduced
2006-08-11 01:42:35
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answer #10
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answered by Anonymous
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