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What offers resistance to the circuit and limits the amount of current that can flow?
Wiki User
∙ 7y ago
The internal components of a device that has been manufactured by a company adds up to the internal resistance of the device. Some devices are higher in resistance, some are lower. The results that you can see is on the device's nameplate and is represented by the wattage that the device draws.
To answer the second part of the question, the answer is Ohm's law. The current of a circuit is directly proportional to the applied voltage and inversely proportional to the resistance of the circuit. In other words if the voltage remains the same, the higher the resistance the lower the current draw. A short circuit is no resistance, very high current. This is why over current protection is needed in most electrical circuits.
Wiki User
∙ 7y ago
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How a fuse controls the flow of electric current in a circuit?
A fuse does not control the flow in a circuit, it limits the current in a circuit. If the load in a circuit shorts out the fuse link melts and opens the circuit and stops the current flow and prevents the wires feeding the circuit from melting and catching fire. resist
Why does the breaker kick off when the positive wire touch the negative wire?
In every electrical circuit there has to be a resistive or inductive load that limits the current inrush to that of the devices internal resistance. Without that resistance in the circuit, the current will not be restricted and will go to a very high value instantaneously.In the electrical trade this is known as a short circuit. At this very high current value that are only two ways that the current flow will stop. One is the circuits's overload protection, usually a breaker or fuse, will trip and that will open the circuit. The second is that the wires that have become shorted will generate so much heat that the wires will burn and melt open. Once that happens the current flow will stop.
Is there a 40 amp outlet?
There isn't currently a 40A outlet made for the USA market because it doesn't match the available branch circuit wiring current carrying capacity limits in the National Electrical code. The current carrying capacity jumps from 30A for a 10AWG copper circuit to 50A for 8AWG copper circuit. The available outlets reflect this.
What is electronic blast for a CFL lamp?
The electronic BALLAST is a circuit that limits the current through the fluorescent bulb to the design value. It also provides a pulse of high voltage to start the bulb conducting when it is switched on.
What limits the amount of synthetic ethanol produced?
the amount of feedstock avalialble
What is the name of a device that can be used to control the amount of current?
A resister limits the amount of current passing through a circuit.
What effect would thinner wire have in a circuit?
The smaller the wire size used in a circuit limits the amount of current that is allow to be flow through that circuit.
How does resistance affect the current in a circuit?
Resistors are used for many things in an electronic circuit, including creating a voltage drop at some point; attenuating noise on a signal before it reaches the output stage; in combination with transistor devices, split a signal into 2 opposite phases; present a minimum load to a device to keep it working at its optimum point; to create an appropriate bias level for transistor device inputs; to control a timing circuit in conjunction with a capacitor; to create a tuned circuit in conjunction with an inductor, and/or a capacitor . . . . and the list goes on . . .
What limits the current that flows through a circuit for a particular appllied DC voltage?
The voltage applied and the resistance across it.
What is series dropping resistor?
A series dropping resistor is a resistor that limits the amount of current flow in a circuit.
What do a resistor do in a circuit?
A resistor is a device that impedes or limits the flow of electrical current in a circuit. It converts the current's electrical energy into heat (thermal) energy. A resistor reduces the amount of energy in a circuit and pumps it out as a heat.
What does a resistor do in in a circuit?
A resistor is a device that impedes or limits the flow of electrical current in a circuit. It converts the current's electrical energy into heat (thermal) energy. A resistor reduces the amount of energy in a circuit and pumps it out as a heat.
Why resistor provides bias condition to the circuit?
A specified amount of current is allowed to flow through the diode. if the current passing through the diode exceeds the specific value, the diode gets heated and is likely to be damaged. therefore in a biasing circuit a resistance R has been applied , which limits the current passing through the diode within a specific value.
What component limits current in a circuit?
A resistor or an inductor. The inductor limits transient current, not steady state current.
What is difference between ideal current source and practical current source?
Internal resistance. The ideal current source has no internal resistance in parallel with it (if it was set to supply no current it would act as an open circuit), and all the current it supplied would have to flow through its load (even if the load was an open circuit, in which case the voltage across the current source would be infinite). A real current source has the practical limitation that it must have an internal resistance in parallel with it, therefor some of the current it supplied is bypassed through that internal resistance and never reaches the load (if the load was an open circuit, then all the current supplied is bypassed and the resulting voltage drop across the internal resistance limits the voltage across the current source).
What are resistors?
A resistor is an electrical device that limits current in a circuit. It converts electrical energy into thermal energy (heat), and drops voltage. Conductors in an electrical circuit allow current to flow through them will little resistance. The medium in a resistor, the resistive material, is not a good conductor, and will "resist" the current that wants to flow through it. This is how it limits current in a circuit. A resistor is rated according to its resistance and it ability to dissipate heat. It will be rated in ohms of resistance and in watts. A one ohm resistor will allow one amp of current to flow through it when one volt is applied across it. It will generate one watt of thermal energy, which it will have to dissipate as heat.A resistor is an electrical component that limits or regulates the flow of electrical current in an electronic circuit. Resistors can also be used to provide a specific voltage for an active device such as a transistor.
Why does the current immediately increase in current after reaching a certain voltage rather than a gradual current increase?
It depends on the nature of the circuit. In a purely-resistive circuit, the current would rise immediately because resistance merely limits its value, it doesn't oppose any change in current. But in a resistive-inductive circuit, for example, the inductive component opposes any change in current, so the current will rise more gradually.
