Explain about the V-i characteristics of constant voltage, Physics

Assignment Help:

Draw and explain V-I characteristics of constant voltage and constant current sources.

Ans: V-I Characteristics of Constant Voltage Source: A voltage source that has very low internal resistance (or impedance) as compared to load impedance (or resistance) is called a Constant Voltage Source.

A real voltage source (constant voltage source) has some internal resistance. For example, a flashlight battery has an internal resistance of less than 1 ohm, a car battery has an internal resistance of less than 0.1 ohm and an electronic voltage source may have an internal resistance of less than 0.01 ohm. A real voltage source which is having an internal resistance of 0.01 ohm with load resistance RL is illustrated in below fig (a). When, a load resistance varies from 11.99 ohm to 1.19 ohm, terminal voltage varies from 11.99V to 11.9 V and load current varies from 10A to 1A respectively.

534_physics.png

 

This signifies that  terminal  voltage  remains  constant  and  the  source  behaves  as  a constant voltage source irrespective of load current, as shown in fig.

514_physics.png


Related Discussions:- Explain about the V-i characteristics of constant voltage

Explain retina, Retina It is inner most and sensitive layer. It receive...

Retina It is inner most and sensitive layer. It receives images of near and far objects.

Linear-shm, A particle executes linear some with an amplitude if 2 cm.when ...

A particle executes linear some with an amplitude if 2 cm.when the particle is at 1cm from the mean position the magnitude of its velocity is equal to that of its acceleration.Then

#Homework Problem.., An unknown material has a normal melting/freezing poin...

An unknown material has a normal melting/freezing point of -26.3° C, and the liquid phase has a specific heat capacity of 160 J/(kg · C°). One-tenth of a kilogram of the solid at -

How long does it take for the water to reach boiling point, How long does i...

How long does it take for the water to reach the boiling point? An iron boiler of mass 230 kg contains 830 kg of water at 18C. A heater supplies energy at the rate of 52,000 kj/

What is reluctance?, It is the opposition offered by the material of the fl...

It is the opposition offered by the material of the flux. Reluctance α mean length of flux path and reluctance α 1/cross section A Reluctance=1/μ 0 μ r A Here μ 0 a

Are certification important in the fiber optics industry, Are certification...

Are certification important in the fiber optics industry? It will depend upon the type of certificate, what is certified and through who is granted. Several certifications refe

Name the communication in which the sign is a discrete, With that purpose w...

With that purpose was famous Davisson-Germer experiment with electrons performed? Name the type of communication in which the sign is a discrete and binary coded version of the

Explain the magnetizing force, An iron ring of mean diameter 10 cm is unifo...

An iron ring of mean diameter 10 cm is uniformly wound with 2000 turns of wire. When a current of 0.25 A is passed by the coil a flux density of 0.4 T is set up in the iron. F

What do you mean by a shunt, What do you mean by a shunt? Reduce expression...

What do you mean by a shunt? Reduce expressions for the current flowing through the shunt resistance and galvanometer. Describe the principle on which a transformer works. Defin

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