Brad I am not going to continue the argument, and it would seem that one of us needs to go back to school. As no one has taken your side in this, I would reconsider WHO needs to go back to school. I don't know where you got your erroneous information, but I like you, so I tried to be diplomatic with you on correcting your erroneous ideas but that time has passed. Get your act together and quit confusing everyone on this subject.
Room
Room
I have read your last few posts,and i can tell you now--it is not me that should look more into this.
Reading one of your positions on this,i see you believe that a coil placed across a battery is a series connection,and that is where i am making my mistake.
I can assure you that it is not me making the mistake here,as a coil placed across a battery is a parallel connection. To help you understand this,first you must understand the difference between series and parallel connections.
In a series connection,the components are connected so as they all have the same current flowing through them.
Series connected circuits normally require a minimum of two components plus the source--in this case a battery.
A parallel connection is where the circuit components are connected to the source so as they all have the same potential difference across them as the source. An inductor placed across a source-such as a battery,will at all times have the same potential difference across it as that of the battery.
If you place a resistor across a battery,it is a parallel connection,as the potential difference across the resistor will be the same as that of the battery
If you place a capacitor across a battery,it is a parallel connection,as the potential difference across the capacitor will be the same as that across the battery--
providing no ohmic losses through the connecting wires.
And the same applies for an inductor placed across a battery--parallel connection

Quote:
Many people do not know the difference between CEMF and BEMF and think they can interchange them whenever they want.There is not a lot of difference.
CEMF is normally used in relation to AC or solid state devices,such as a voltage being dropped across an inductor.
BEMF is normally used in reference to the generating action of an electric motor-such as a PM DC motor-->but not limited to.
Both relate to magnetic fields cutting through conducting loops(coils),and producing a voltage that is of the same polarity to that which created it.
Quote:
The CEMF is not at it's highest at the moment the switch is closed It is at it's lowest.Im sorry Room,but that is also incorrect.
At T=0 to the first time constant,is when the CEMF is at it's highest value,which is why the current flow through the coil during the first time constant is at it's lowest.
The instant a voltage is dropped across a coil (T=0),is when the rate of change of the magnetic field is at it's greatest--this is why the CEMFs value is at it's maximum at this time,and why the current flow is at it's minimum--the potential difference between the applied EMF and the CEMF is at it's smallest value.
Quote:
It doesn't first block current it first allows the current and then as the CEMF develops it slows it down untill the coil is fully charged,Once again,that is incorrect,and in actual fact completely opposite to what happens.
The CEMF at T=0 is at it's highest value,and so the potential difference between the applied EMF and CEMF is at it's lowest value,and so very little current can flow.
As the magnetic field being built by the inductor starts to close in on it's maximum value,and rate of change reduces,the current flow through the coil starts to increase,due to a lower CEMF value.
Quote:
In BEMF before the EMF is removed (example) current is flowing left to right through a coil from negative to positive. So the left end of the coil is neg. and the right end is pos. ( its connected to source Positive current flow is neg. to pos.) so now the source is removed from the coil and we start the bemf cycle, in order for the BEMF to aid or give back its energy the coil must release it in the same direction it was flowing. Which means the coil now becomes neg. on the right and pos. on the left --It reverses In order to keep current flowing in the same direction neg. to pos.Once again,BEMF and inductive kickback are being mixed up.
Once again-BEMF is not inductive kickback.
An example of BEMF--
A PM DC motor produces BEMF.
BEMF is the self generated EMF within the motor.
Once again,the BEMF produced is of the same polarity to that of the source.
Inductive kickback--
When a voltage is dropped across a coil,the magnetic field being built starts at the core(if it has one),cuts through the conducting loop's,and then into free space.
When the source is removed,the magnetic field collapses from the surrounding free space,through the conducting loop's,and back into the core. During this process,the coil now becomes the source. The magnetic field is now collapsing from free space,through the conducting loops,back into the core. This is why the voltage inverts across the coil--the magnetic field is cutting through the conductive loops in the opposite direction. It is also why the current continues through the coil in the same direction.
Inductive kickback has nothing to do with CEMF or BEMF.
I hope that helps explain where you are making your mistakes.
Brad
Never let your schooling get in the way of your education.