I just joined a collage and I go there regularly that’s why I was kind of inactive on steemit almost whole day goes in collage, learning stuff. I took admission in Btech. Computer science but we have to learn the following subjects in the first year and the real computer stuff will start from 2nd year.
Because I am short of time these days, I don’t have much time to put efforts and make a good looking post I have to revise things and do homework in remaining time. But I have an Idea
Putting class notes on steem blockchain.
Because collages aren’t cheap so not all people can afford go there. What can I do is I will try put my class notes onto the steem Blockchain that will help in following ways-
Voltage source is nothing but a battery if we use it as a voltage source then it’s called voltage source Ideal voltage source has 0 Internal resistance because the internal resistance which is caused by hindrance caused by electrolytes present is battery in the movement of charge or electrons is parallel in the circuit, that’s why it should be zero in Ideal case. So that all current can be provided to electronics or load resistance.
Rint = Internal resistance
Vs = Voltage source
RL = Load resistance
**Let the current in circuit be I**
Vs = I x Rint + I x RL ……… (From Ohm’s law V=IR)
Ideally,
Rint should be 0
~ Vs = I x RL …………….. (When Rint ~ 0)
Current source is again a battery used as a current source, Internal resistance of a current source is very high because the internal resistance is in parallel, to provide current to load resistance the internal resistance has to be in parallel because current divides in parallel and voltage divides in series
Rint = Internal resistance
Rl = Load resistance
I = I1 + I2
or I2 = I – I1
I1 = I ……. (When I1 ~ 0 because of high internal resistance)
We want Rint >>> Rl so that I2 <<< I2
Active sources are those which are capable of genet=rating current by their own e.g battery
Passive sources are those which are incapable of generating current by their own they simply act as storage of current being supplied from an active source. e.g capacitor
Voltage source is one where voltage is held constant and other parameters such as current being determined by external factors.
Current source is one where current is held constant and other parameters such as voltage being determined by external factors
That’s enough for sources
Req = R1R2¬/ R1 + R2¬
Req = R1 + R2¬
It is assumed that the reader knows that current divides in parallel circuit and voltage remains the same
I1 ¬= I R2 / R1 + R2
I2 = I R2 / R1 + R2
Or in general the current in parallel divides inversely in the ratio of resistance. Obviously the current will be more in the branch having less resistance.
Current in given branch = Total current x resistance of opposite branch / Total resistance[1]
[1]NOTE- Total resistance is the sum of resistances not the equivalent resistance we have to add values of resistances we do not have to calculate equivalent resistance.
It is assumed that the reader knows that voltage divides in series circuit and current remains the same
It’s very simple voltage divides in the ratio of resistances in parallel circuits and remains the same in parallel circuits.
Voltage across the resistor = Total voltage x same resistance / Total resistance
P = V I
P= I2 R
Where P is power dissipated across resistor, I is current flowing through it, V is potential difference across it.
They are dynamic components that can store or remember previous values and will be having some initial value based on previous condition, It stores energy in the form of potential energy.
Q = I t
C = Q V
Vc = 1/c ꭍ I dt
Ic = C dv/dt