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What is the function of a carbon pile rheostat in an electrical circuit?
A carbon pile rheostat is used to control the amount of electrical current flowing through a circuit by varying the resistance. It works by adjusting the amount of contact between carbon discs, which changes the resistance and therefore the current flow.
What is a resistor made from?
A resistor is any material that exhibits a resistance. Although copper wire is very low resistance, there is still an element of resitance. Other wire has higher resistance and high power resistors are often made from a coilf of wire. Most resistors use carbon to provide the resistive path. Newer products include plastics, doped with metal. The faders on expensive sound mixers use plastic resistors because they are very stable, hardwearing and tend not to suffer from the crackling noise that volume controls sometimes generate as they get older.
What type of electrical energy produces heat?
Heat is technically defined as the energy transferred from one object to another because of temperature differences.If you're talking about electrical circuitry, there are no types of electrical energy. Electrical energy is the energy associated with the redistribution of electrical charge.Physicists usually talk about the electromagnetic field and one could distringuish between the electromagnetic energy transmitted by light/photons and the electrical energy transmitted by charged particles.Electrical energy of charges can be transferred from the field into the internal energy of a resistor ( a wire, a stack of carbon) and make it get warmer. This is called "joule heating." This warm resistor then loses heat to its cooler surroundings. This is how coffee warmers, hot water heaters, hair dryers, electric ovens and stoves work.Electromagnetic energy of photons can increase the temperature of an object simply by absorbing the photon.
In an electromagnet what are the springy pieces of metal or carbon that make contact with the commutator's contacts?
The springy pieces of metal or carbon that make contact with the commutator's contacts in an electromagnet are known as brushes. Brushes are responsible for delivering electrical current to the commutator, allowing the electromagnet to function as intended.
How can you limit amperage drawn through a circuit without decreasing voltage I need to variably restrict amperage drawn from point 12amp to 1amp with the turn of a dial at 240v AC Does a device exist?
i have a similar problem but mine doesn't need to be controlled with a dial. i think a carbon pile may be your answer. an old carbon pile battery tester through the circuit. either that or several resistors, select amount of resistors your circuit passes through with your dial switch, like a blower motor in your car would use. my problem however is finding a way to limit amps to 75 between two sets of batterys where amps have the potential of fluctuating from 0 to2600. a cannot just put a resistor in the circuit because they resist a set amount of ohms rather than only let a set amount of amps pass through. like a breaker or fuse. but i don't want a breaker or fuse because the circuit will be broken with them. I'm working on a 12v dc circuit. I'm not sure how a carbon pile will react on ac but it something to think about.
What is the function of a carbon pile rheostat in an electrical circuit?
A carbon pile rheostat is used to control the amount of electrical current flowing through a circuit by varying the resistance. It works by adjusting the amount of contact between carbon discs, which changes the resistance and therefore the current flow.
Uses and basic function of carbon resistor?
i don't know about the uses but i know the advantages of carbon resistors.they are:1.they are compact. 2.they are inexpensive.
What is another name for a variable resistor?
If the two of the three terminals on a Potentiometer are used, then it may be used as a variable resistor.AnswerA variable resistor may function as a potentiometer (using three terminals) or as a rheostat (using two terminals). Its correct name is 'variable resistor', while the terms 'potentiometer' or 'rheostat' describe how it is being used.
Materials needed to make a resistor.?
carbon
What is fixed carbon resistor?
It's a wireless compressed carbon-based resistor that has coloured rings around it to indicate its value in Ohms based on a predefined code.
Most common failure in a resistor?
This depends on the type of resistor. Carbon composition and metal film resistors typically will burn open, carbon film types can short.
What type of fixed resistor is made from a compound of carbon graphite and resin bonding material?
A carbon composition resistor is made from a compound of carbon graphite and resin bonding material. This type of resistor has a cylindrical shape and is used for applications requiring high stability and low noise levels.
What is a resistor made from?
A resistor is any material that exhibits a resistance. Although copper wire is very low resistance, there is still an element of resitance. Other wire has higher resistance and high power resistors are often made from a coilf of wire. Most resistors use carbon to provide the resistive path. Newer products include plastics, doped with metal. The faders on expensive sound mixers use plastic resistors because they are very stable, hardwearing and tend not to suffer from the crackling noise that volume controls sometimes generate as they get older.
What is the different of metal oxide resistor and carbon oxide resistor?
A: Lots of significant difference metal has better stability with the environment it can be laser ed with precision and carbon is usually more noisy
What is the purpose of a variable resistor?
A variable resistor is used in cicuits to vary the magnitude of resistance passing through the resistor. It is commonly used to change the value of current across a circuit to find relationships of current and voltage.
What is the function of carbon burshes?
the purpose of carbon burshes is to ensure electrical connection between the rotating commutator and stationary load circuit.the burshes are made of carbon and rest on the commutator carbon burshes are employed to reduce sparking and provide better commutation.
How does a resistor resist electric current?
A resistor works by limiting the current that goes through it. When current is limited, then voltage across the resistor also changes. We use many forms of resistors in our normal day. Lightbulbs are infact all resistors in one way or another. When the filament in a lightbulb heats up, the resistance increases. When resistance increases, the current is reduced. In the end, the current has been reduced so much that it can no longer carry on heating up the filament. The bulb is then thermally stable and shines for our pleasure.
