In a recent forum discussion someone did a copy/paste from your e-book. I'd like to point out a couple of errors:
When we speak of a certain amount of voltage being present in a circuit, we are referring to the measurement of how much potential energy exists to move electrons from one particular point in that circuit to another particular point.
"Potential energy" should actually be "electric potential". As an example, consider a 1uF cap and a 100uF cap both charged to exactly 1 volt... which one has more potential energy? Which one has a higher electric potential?
Also:
Just like voltage, resistance is a quantity relative between two points.
Resistance is an absolute quantity, not a relative one. The voltage at any node is only meaningful if it is given relative to some other node. But the resistance through any branch is absolute, and not dependent on stating it relative to anything else. Yes, we make a measurement across 2 nodes to determine the resistance, but that's an artifact of the way the ohmmeter works.
I admit I haven't thoroughly read the rest of the e-book, but it seems to be well-done.
Regards,
Geotech
When we speak of a certain amount of voltage being present in a circuit, we are referring to the measurement of how much potential energy exists to move electrons from one particular point in that circuit to another particular point.
"Potential energy" should actually be "electric potential". As an example, consider a 1uF cap and a 100uF cap both charged to exactly 1 volt... which one has more potential energy? Which one has a higher electric potential?
Also:
Just like voltage, resistance is a quantity relative between two points.
Resistance is an absolute quantity, not a relative one. The voltage at any node is only meaningful if it is given relative to some other node. But the resistance through any branch is absolute, and not dependent on stating it relative to anything else. Yes, we make a measurement across 2 nodes to determine the resistance, but that's an artifact of the way the ohmmeter works.
I admit I haven't thoroughly read the rest of the e-book, but it seems to be well-done.
Regards,
Geotech