Variable resistor, Physics

Assignment Help:

The variable resistor is a resistor whose value can be accustomed by turn a shaft or sliding a control. They are also referred to as potentiometers or rheostats and permit the resistance of the device to be altered by hand. A rheostat is a variable resistor with two terminals, one sliding and one fixed. It is utilized with high currents. The term rheostat is usually reversed for higher-powdered device, above about ½ watt. A potentiometer is a common type of variable resistor; one common use is as volume controls on audio amplifiers and other forms of amplifiers.

CLASSIFICATIONOF VARIABLE RESISTORS:

These resistors can be categorized on the basis of material used and application. On the basis of application they are known as the general purpose and they are of precision type. But on the basis of resistive material they are categorized as:

(a)          Carbon composition resistors

(b)         Wire wound resistors

(c)           Cermets resistors

(d)         Multi-turn resistors

(e)         Multi-turn potentiometers

 

 

 


Related Discussions:- Variable resistor

Law, define varigonon law

define varigonon law

Flux, as flux = E.A and flux density is equal to flux/A then why A/A cannot...

as flux = E.A and flux density is equal to flux/A then why A/A cannot e cancelled ?

Evaluate types of charge, Questions: A neutral hollow metal ball is on ...

Questions: A neutral hollow metal ball is on the end of a glass rod consequently that one can move it around easily without touching the ball. A rubber rod is chafed with rabbi

Sonic waves, what are they and how do you measure them

what are they and how do you measure them

Find out the friction co-efficient, Jonathan, with a mass of 81 kg, starts ...

Jonathan, with a mass of 81 kg, starts at rest from the top of a water slide angled at 42° from the ground. He exits at the bottom 3.0 s later going 15 m/s. What is μk?

The quantum no having non integral value, the quantum no having non integra...

the quantum no having non integral value is ? what does it designate

Explain the term resistivity, Explain the term 'resistivity' and write its ...

Explain the term 'resistivity' and write its S. I . unit. Derive the expression for the resistivity of a conductor in terms of number density of free electrons and relaxation time.

Working of single –phase induction motor, Working of Single –phase inductio...

Working of Single –phase induction motor Working : Construction of a single -phase motor is same to that of a three -phase induction motor except that the stator is given wit

High value resistor, These resistors are usually of carbon composition, car...

These resistors are usually of carbon composition, carbon film on a ceramic rod and sealed in evacuated glass tube. End connections are made up of copper clad nickel-iron alloy.

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd