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When dangerously high currents flows through a thin strip of metal melts which creates an open circuit and current stops flow?
Wiki User
∙ 12y ago
This is the general description of how a circuit breaker operates.
Wiki User
∙ 12y ago
Wiki User
∙ 12y agoIt's a fuse
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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 creates surface current?
Surface currents are created by air currents, earth's rotation, and positions of the continents.
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 is unsymmetrical current?
it means those currents those are short circuit.
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.
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.
How is a total current in a parallel circuit worked out?
sum the individual branch currents
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.
What do you find out about the current at different places in the series circuit?
The current at different places in a series circuit is the same. Kirchoff's current law states that the signed sum of the currents entering a node is zero. A consequence of this is that the current at every point in a series circuit is the same.
Is An open in the main line of a parallel circuit causes all individual branch currents to be zero?
Yes, an open in main line of a parallel circuit will effect the entire circuit current and make the whole circuit current zero
If two light-bulbs are connected in a series circuit and one of the light-bulb's current flowing is 0.5 A what is the current flowing in the other light-bulb?
Current in a series circuit is the same throughout the circuit. Voltages are additive. Voltage in a parallel circuit is the same throughout the circuit. Currents are additive.
