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By Kirchoff's current law, the sum of the signed currents entering a node is zero.
In a parallel circuit, this means the sum of the (often single) current(s) entering a node (junction) is the same as the sum of the (two or more) currents leaving that node.
To determine the current in a particular branch, you need the voltage and resistance, or you need something else that you can use to calculate the current.
In the second case, if you know the total current and one branch current in a two branch circuit, you know the other branch by calculating total minus first branch.
For the first case, one method is to take advantage of Kirchoff's voltage law, which states that the signed sums of the voltage drops around a series circuit is zero. In a parallel circuit, this means that the voltage drop across each branch is the same. If you then also know resistance, you know current.
Wiki User
∙ 14y ago
Wiki User
∙ 14y agoYes. Current flows in loops, so it must be constant throughout a circuit that contains only one loop (ie from a source through several circuit elements, to ground/back to the opposite side of the source).
Wiki User
∙ 12y agoYes.
Kirchoff's Current Law: The signed sum of the currents entering a node is zero1. A consequence of this is that the current at every point in a series circuit is the same.
The reasoning is this. If the signed sum of the currents entering a node is zero, then the current entering the node is equal to the current leaving the node2. Since a series circuit has only two connections to each node, then, by trivial analysis, the current at every point in the series circuit is the same.
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1The signed sum means that we consider the current entering a node to be of one sign, with the current leaving the node to be of the other sign. One is positive and the other is negative, that is, when you talk about the current only "entering" or only "leaving" the node.
2In this aspect, we talk about the current entering as well as the current leaving, so both are positive, or both are negative - its just a point of analysis. The issue is that the currents are the same. If you call them both entering, or both leaving, then one is positive and the other is negative, and they simply cancel each other out.
Wiki User
∙ 9y agoThat depends on the circuit. Circuits that contain one or more purely series sub-circuits, will have by definition the same current in all components within each purely series sub-circuit. Some circuits with active components will make the currents in separate parts of the circuit vary proportionally, if the proportionality factor is 1 these currents will be the same. Otherwise, no except by coincidence.
Wiki User
∙ 14y agoIf you took physics you would know that pressure remains constant no matter where applied. So the answer is yes
Wiki User
∙ 12y agoNo. The current in a series circuit is the same everywhere. The voltage across a parallel circuit is the same.
Wiki User
∙ 14y agoYes
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The current in a what circuit is the same at every point?
A series circuit has the same amount of current at all points in the circuit.CommentIt's not simply 'the same amount of current at all points''; it's the same current at all points.
What is the current of a series-parallel circuit connection?
The current flowing through a series circuit is (voltage between the circuit's ends) / (sum of all resistances in the circuit). The current is the same at every point in the series circuit.
What electrical quantity is the same throughout a series circuit?
In any series circuit, there is one and only one path for current flow. All the current flowing in the circuit will flow through all of the devices in that circuit. A break at any point in the circuit will cause current flow to cease. Lastly, it is current that is the same at any point in the circuit where we'd care to measure it.
In a series circuit what would happen if one of the bulbs stopped working?
All the bulbs will go out. In a series circuit, the current at all points is the same. This is Kirchoff's Current Law. If you loosen or remove a bulb in a series circuit, the current at that bulb becomes zero, and by Kirchoff's Current Law, the current in every part of the circuit also becomes zero.
How is current distributed in a series circuit?
In a series circuit, all components gets the same amount of current passing through them.
The current in a what circuit is the same at every point?
A series circuit has the same amount of current at all points in the circuit.CommentIt's not simply 'the same amount of current at all points''; it's the same current at all points.
What is the current of a series-parallel circuit connection?
The current flowing through a series circuit is (voltage between the circuit's ends) / (sum of all resistances in the circuit). The current is the same at every point in the series circuit.
Voltage varies or is the same in all parts of a series circuit?
Current is the same at all points in a series circuit.No statement can be made concerning voltage. Voltage is a potential differencebetween two points, and you haven't specified a point for reference.
What is the same in all parts of a series circuit?
Current.
What electrical quantity is the same throughout a series circuit?
In any series circuit, there is one and only one path for current flow. All the current flowing in the circuit will flow through all of the devices in that circuit. A break at any point in the circuit will cause current flow to cease. Lastly, it is current that is the same at any point in the circuit where we'd care to measure it.
In a series circuit what would happen if one of the bulbs stopped working?
All the bulbs will go out. In a series circuit, the current at all points is the same. This is Kirchoff's Current Law. If you loosen or remove a bulb in a series circuit, the current at that bulb becomes zero, and by Kirchoff's Current Law, the current in every part of the circuit also becomes zero.
Is voltage the same at all points in a circuit?
Yes it is in series and parallel
How is current distributed in a series circuit?
In a series circuit, all components gets the same amount of current passing through them.
Are the amps in a series circuit the same all the way around?
Yes, the current is the same at every point in a series circuit.
What values must be the same in all parts of a series circuit?
Current
Why current in series combination is constant?
Normally, but if the circuit has capacitors this is not necessarily true.Another viewpoint:No. The current doesn't have to be constant in a series circuit, It can grow, shrink,wax, wane, switch on, switch off, or wander randomly about. But whatever it is,it must be the same at all points in the series circuit.
What happens as a current flows through a parallel circuit?
if the circuit is a series circuit (all loads wired in a single line , one after the other ) then the current will be the same in any part of the circuit . if there are several different paths for the current to take , then each path will carry a different percentage of the total current . when each of these different current values are added together , they will equal the total supplied current.
