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What is the relationship between the current leaving the source and the current through each load in a series circuit?
Wiki User
∙ 13y ago
A: In a series circuit the current remains the same for each components only the voltage across each component will change and only if the components are of different value.
Wiki User
∙ 13y ago
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Explain how the amount of current that flows out of the battery is related to the amount of current in the branches of the circuit?
Kirchoff's Current Law: The signed sum of the currents entering a node is equal to zero. This means that the current leaving the battery is equal to the sum of the currents in the branches of the circuit.
Why bulb not glows when circuit shorts?
There is a concept that one must understand when working with electricity; "electrical current will always take the path of least resistance." Many people don't understand the difference between a "short" circuit and an "open" circuit. An open circuit is when there is effectively no return path from the electrical source back. It's like when a light switch is turned off and the light isn't on. A SHORT circuit would be when the light switch is turned on but another wire is across the same wire pair, resulting in an effectively shorter path between the conductors of the power source. The electrical current then takes the path of least resistance, leaving no electrical current for the bulb. Naturally, there is that gray area between a short circuit and an open circuit, that's where things run properly... in general.
In a DC circuit must the positive and negative conductors be the same size if not how is the size difference determined?
Yes, since the current is the same through out the complete circuit. the design size of the conductor entering the circuit should be the same size as the conductor leaving the circuit.
Why is current the same in all points of a circuit even with resistors on it?
Electrical current (amperes, or coulombs per second) is the flow of electrons from one point to another. In a series circuit, there is only one path for those electrons to flow, so the amount of flow at different points in a series circuit is always the same. That's not to say that the current does not change - certainly different resistance, for instance, would cause different current - the point here is that, for a given set of conditions, the current in a series circuit is the same at every point in the circuit. This is Kirchoff's current law. The signed sum of the currents entering a node must always be equal to zero. If a node consists only of two elements, then the current entering the node from one element must be equal to the current leaving into the other element. Since a series circuit consists only of nodes with two elements connected together, that means the current at every point in a series circuit is the same. Think of this analogy. Connect several water hoses in series with modulating valves between each section. Apply water pressure to one end. Make different adjustments to the valves, representing different resistances. Note that, although the water pressure is different at different points (think voltage), the current flow at different points (think current) is the same.
What function does the neutral serve when the supply is single phase in a wye connection?
In a single-phase circuit like a house fed from 4-wire three phase in the street, the current flows in the live and neutral wires. The neutral currents from a street of houses are expected to cancel each other so that the overall current in the neutral leaving the transformer is small.
What is the relationship between the current leaving the source and the current through each load in a parallel circuit?
You should study up on Kirchov's Current Law (KCL). It is the means of answering your question and a tool for understanding all parallel circuit configurations.AnswerKirchhoff's current law will tell you that the supply current is equal to the sum of the branch currents.
What prevents current from leaving a circuit?
Insulation.
How does a GTE Sylvania GFCI circuit breaker 1 pole 15 a work?
A GFCI breaker monitors the imbalance of current between the ungrounded (hot) and grounded (neutral) conductor of a given circuit. With the exception of small amounts of leak-age, the current returning to the power supply in a typical 2-wire circuit will be equal to the current leaving the power supply. If the difference between the current leaving and returning through the current transformer of the GFCI exceeds 5 mA (61 mA), the solid-state circuitry opens the switching contacts and de-energizes the circuit. Touch the neutral or hot and you change this current which will trip the breaker.
Why does amperage stay the same in a circuit?
Amperes represents a flow of charge (coulombs) in a circuit in a period of time (seconds). In order to have that flow, you have to have conductance, which is the inverse of resistance. Since the conductance of two circuits not connected to each other is zero (infinite resistance, neglecting leakage) there can be no current flow between disjoint circuits. A node is a junction between two elements in a circuit, such as the connection between a resistor and a light bulb. If you consider that the only circuit between those two elements contains that node, and that leakage is inconsequential in comparision to the conductance of the circuit, then you have to note that the current entering the node must be the same as the current leaving the node. In fact, this is Kirchoff's Current Law: The sum of the currents entering a node must equal the sum of the currents leaving a node. (Usually, we think of current entering to be one sign (+) and current leaving to be the other sign (-), so the sum of all currents relative to the node is zero.) Expand this thinking little by little to encompass the elements in the circuit. Again, there is no path for current to flow other than through the elements of the circuit. This means that the current in every part of the circuit is the same. Keep in mind that this applies only to series circuits. In a parallel circuit, current can branch out between two elements connected to a node supplied by another element. In that case, the current in each branch will be different, depending on the resistance and voltage of that path. Circuit analysis is simply the consolidation of a complex circuit into a simple circuit by repeated application of various conversions, such as Norton and Thevanin equivalents, with the ultimate goal of knowing the voltage, current, and resistance for each element.
Explain how the amount of current that flows out of the battery is related to the amount of current in the branches of the circuit?
Kirchoff's Current Law: The signed sum of the currents entering a node is equal to zero. This means that the current leaving the battery is equal to the sum of the currents in the branches of the circuit.
What is the strength of current in each resistor of a series circuit?
The current in each resistor in a series circuit is the same. Kirchoff's Current Law states that the sum of the currents entering a node must add up to zero. The connection between two resistors in a series circuit is a node. The current entering the node from one resistor is equal to the current leaving the node into the next resistor.
Does Kirchhoff current law and Kirchhoff voltage law depend on the relationship between current and voltage in a resistor?
Kirchhoff's Voltage and Current Laws apply to circuits: series, parallel, series-parallel, and complex.If your circuit comprises just a single resistor, then they still apply. For example, the voltage drop across a single resistor will be equal and opposite the applied voltage (Kirchhoff's Voltage Law), and the current entering the resistor will be equal to the current leaving it (Kirchhoff's Current Law).
Is the current in one branch of a parallel circuit more than less than or equal to the total current entering the junction point of the circuit?
Answer: less. Answer: Kirchhoff's Current Law states that the sum of all currents into a junction (or out of a junction) must be zero. This refers to the algebraic some, that is, if you consider the current into the junction, any current entering the junction will be counted as positive, while any current leaving the junction will be counted as negative. Thus, any individual current will be equal to the negative of the sum of all the other branches at the junction.
What is the neutral current?
I think you mean "what is the permissible imbalance between live and neutral current" All current supplied by the live wire should exit via the neutral. Any imbalance leaving via Earth is detected by an earth leakage circuit breaker . They trip at about 30 mA.
What happens to the current flowing in the ring main as more bulbs are turned on at night?
As more light bulbs are added in a series circuit, the effective resistance of the circuit increases. That causes the current leaving the source to decrease.
What is the permissible neutral current?
I think you mean "what is the permissible imbalance between live and neutral current" All current supplied by the live wire should exit via the neutral. Any imbalance leaving via Earth is detected by an earth leakage circuit breaker . They trip at about 30 mA.
Why bulb not glows when circuit shorts?
There is a concept that one must understand when working with electricity; "electrical current will always take the path of least resistance." Many people don't understand the difference between a "short" circuit and an "open" circuit. An open circuit is when there is effectively no return path from the electrical source back. It's like when a light switch is turned off and the light isn't on. A SHORT circuit would be when the light switch is turned on but another wire is across the same wire pair, resulting in an effectively shorter path between the conductors of the power source. The electrical current then takes the path of least resistance, leaving no electrical current for the bulb. Naturally, there is that gray area between a short circuit and an open circuit, that's where things run properly... in general.
