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Depending on the situation. The purpose of the rheostat is use to change the resistance of the circuit.
The rheostat is use to define Ohm Laws
the 2nd situation is use to find out what the fixed resistor's resistance.
3rd purpose : used to control the resistance of circuit.
eg Radio
What else can I help you with?
Can a rheostat be used to control speed on a capacitor run motor?
No. If you attempt to reduce the voltage to a cap start motor by using a rheostat, you can destroy the motor.
What is the rheostat?
It is a variable resistance device which control the flow of current
What is the name used for a high power variable resistor?
Rheostat
What is role of rheostat?
A rheostat is a resistor with variable resistance.There are many type of rheostat,involved of a rotary-type rheostat and a sliding rheostst.I dunn know much about the rotary-type rheostat but I can tell u how does a sliding rheostat work. A sliding rheostst consists of a coil resistance wire wound on a tube and a sliding contact.The sliding contact be moved on the metal bar.Consider of the length of the resistance wire which let electric current through increases,the reistance would be higher and decrease the elctric current.Thus by moving the sliding contact,we can adjust the size of electric current.It's ofter used as a dimmer or to adjustl the voluime of the radio. If you are interested in the rotary-type rheostat,try to find it by yourself!
What is the difference between resistance box and rheostat?
Resistance box will provide resistance of discrete values such as 1, 2, 3 ohms or 0.1,0.2, 0.3 ohms. So interim values are not possible. But rheostat gives a chance to vary the resistance continuously. It may be 5 ohm or even 5.769 ohm. So just to fix current for a specified value such 1.5 ampere resistance box will not be suitable where as a rheostat is the most suitable.
How is a rheostat use as a potential divider?
_____________ J| -_____/\/\/\/\_________+ | | | - + | |___i|i|___| E Well this is the circuit diagram , where r is the sliding jockey of the rheostat and a cell (E) is connected in parallel with the rheostat. By adjusting the jockey resistance of the rheostat can be altered which in turn would regulate the potential offered by the cell E to the main circuit. And thus a rheostat can be used as a potential divider.
Can you use a rheostat on ac motor?
Yes you can use a rheostat to control the speed of an ac motor as long as it is correctly sized (power). A better way would be to use a triac control.
How do you Test a rheostat?
how to test a rheostat?
What is another name for a rheostat?
A variable resistor is another name for a rheostat.
Where does lost energy in a rheostat go?
It is lost in heating the resistive material of the rheostat.
What is the hypothesis of a rheostat?
The hypothesis of a rheostat is that by changing the resistance in a circuit using the rheostat, the current flowing through the circuit can be varied, thus regulating the output of the circuit.
Explain the rheostat and its advantages in electric circuits?
Advantages in electric circuits : Advantages of using the rheostat in electric circuits is optional as you could just use the dial on the power-supply to vary the voltage (p.d.), and therefore the current. The advantage of using the rheostat is that you can control it to give you nice even numbers for the voltage.
Why you use rheostat of 15ohm resistance in melde's experiment?
A rheostat with a 15 ohm resistance is used in Melde's experiment to control the amount of current passing through the system. By adjusting the resistance of the rheostat, the frequency of vibration of the standing wave on the string can be varied. This allows for the different modes of vibration to be studied in the experiment.
How do you install a rheostat in 1999 626 Mazda?
How do you install a rheostat in 1999 626 Mazda?
How do you take out the light rheostat on a 95 Monte Carlo?
How do you take a rheostat out of a 2003 monte carlo
How a rheostat is used is as a potential divider?
_____________ J| -_____/\/\/\/\_________+ | | | - + | |___i|i|___| E Well this is the circuit diagram , where r is the sliding jockey of the rheostat and a cell (E) is connected in parallel with the rheostat. By adjusting the jockey resistance of the rheostat can be altered which in turn would regulate the potential offered by the cell E to the main circuit. And thus a rheostat can be used as a potential divider.
Can you use a rheostat on fluorescent lights?
No, rheostats are not typically used with fluorescent lights. Fluorescent lights require a specific type of ballast to control the current and voltage, which is different from the functionality of a rheostat. Using a rheostat with fluorescent lights can lead to inefficient operation and potential damage to the lights.
