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What effect does decreased resistance have on a circuit?
resistance is the opposition to the flow of an electric current, therefore the current will decrease as the resistance increases. Resistance also creates heat. This is how the light globes in a circuit light up.
What total current delivered to a number of devices connected in parallel is the sum of the individual currents in each device Circuit breakers are resettable automatic switches that protect against a?
Yes, the total current delivered to multiple devices in parallel is the sum of the individual branch currents (the vector sum if there is inductive load). Circuit breakers are resettable automatic switches that help protect against circuit overload (such as running too many hair driers and heaters on at one time) and faults (such as dropping the hair drier into a bathtub). Circuit breakers "operate" (or open) to stop current flow to the fault or overloaded 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.
How do you find the branch current in parallel circuit?
For each individual branch, you can use Ohm's Law - just divide the voltage by the resistance.
Do individual lines in a parallel circuit have different currents flowing through them?
They can. The current in each "line" (correctly, *branch*) depends on (i) the applied voltage and (ii) the individual resistance in each branch. If the branch resistances are different, the branch currents will be different. Ohm's Law will let you calculate the individual currents.
What is the sum of currents is known as?
The sum of currents in a circuit is known as total current, which is the combined flow of all individual currents passing through the circuit components. This total current is conserved in a series circuit where it remains constant throughout the circuit.
When dangerously high current flows through this overheated metal pushes the switch open to create an open circuit What is this?
A circuit breaker.
What creates surface current?
Surface currents are created by air currents, earth's rotation, and positions of the continents.
What is unsymmetrical current?
it means those currents those are short circuit.
When dangerously high current flows through a thin strip of metal it melts and creates an open circuit and current stops flowing?
It's OK as a statement so the question mark can be deleted. <<>> This type of device is known as a fuse and it is the fuse's link that melts open.
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 parallel circuit is known as current magnification though it has minimum current at the time of resonance?
In a parallel circuit, each branch has its own current path, allowing the total current to be the sum of the currents in each branch. This is why it is known as current magnification. However, at resonance, the impedance in the circuit is at its minimum, causing the total current in the circuit to decrease. This does not change the fact that individual branches can still have higher currents than in a series circuit due to the unique current paths in a parallel arrangement.
How is a total current in a parallel circuit worked out?
sum the individual branch currents
Is the sum of the separate currents equal to the total current?
Yes, in a closed circuit, the sum of the currents flowing into a junction is equal to the sum of the currents flowing out of the junction. This is known as Kirchhoff's current law.
The sum of currents across the resistors equals the currents through the source in which type of circuit?
In parallel circuit the current through the resistors are different in values depending upon the values of resistors. But the sum of the currents across all the resistors will be equal to the current through the sourcgsvg bdjasuhafyuhda
The electric force that makes current flow in a circuit is related to the what?
The electric force that makes current flow in a circuit is related to the resistance.
How do parallel circuits use current and voltage?
Kirchoff's voltage law: In a series circuit, the signed sum of the voltage drops around the circuit add up to zero. Since a parallel circuit (just the two components of the parallel circuit) also represents a series circuit, this means that the voltage across two elements in parallel must be the same.Kirchoff's current law: The signed sum of the currents entering a node is zero. In a series circuit, this means that the current at every point in that circuit is equal. In a parallel circuit, the currents entering that portion of the circuit divide, but the sum of those divided currents is equal to the current supplying them.
