Mostly Permanent Magnet Motor with minimal Input Power

[TinselKoala]

NO! You must not write
A/h
for Amp-hours!

The slash is used, in English, to indicate division. Like 1 Watt = 1 Joule/second. It can even be assigned a word: "per", as in km/hr, kilometers per hour.  It is the number of kilometers divided by the number of hours. The English (Latin) word "per" indicates a division operation.

One amp-hour is not one amp per hour! So you cannot write A/h for amp-hour.

The - sign is also ambiguous, usually indicating subtraction. But since the quantity "amps - hours" is nonphysical and nonsensical we know that the dash does not indicate subtraction in the "amp-hour" expression.

[gotoluc]

Thanks TK for making it clear!... even though it took a year

Better late then never

Luc

[tinman]

One amp-hour is not one amp per hour! So you cannot write A/h for amp-hour.

One amp hour is  a steady current of one ampere flowing for one hour,-is it not?

[TinselKoala]

One amp hour is  a steady current of one ampere flowing for one hour,-is it not?

Yes, but that is not a "rate". It is a quantity. The Ampere is a rate, so if you go at a rate for a time, you have what? A quantity. Go 1 km per hour for one hour. How far have you gone? One km. 1 km/hr x 1 hr = 1 km.
  Just as "per" denotes division, "for" denotes multiplication.

Consider what we mean by "three amps per hour".  This is written 3A/H. How I got that number is I started with zero amps and I turned my variac up slowly and at the end of an hour I was up to three amps, and at the end of two hours I was up to six amps, and at the end of three hours I was up to nine amps. I turned the current up at a RATE of 3 A/H, or three amps per hour.  If you want to know my current at, say, 90 minutes, you multiply the rate by the time: 3 a/h x 1.5 h = 4.5 A. This use is in effect the "rate of change of the rate" or the first derivative, the slope, of the graph of the current vs. time.

One Amp-Hour is a _quantity_.  To get there mathematically you _multiply_ the number of amps by the number of hours. So if I have a system that produces one amp-hour at 12 volts and I run it for one hour, I have sent (one amp-hour) x (12 volts) or 12 Watt-hours past my measuring point, for that hour. A quantity, distributed over the hour time. And for that one hour, then, I am dissipating the energy at a _rate_ of 12 Watt-hours per hour.  12 W-h / 1 h = 12 Watts... a _rate_, the power dissipation, the rate of energy dissipation. Power in Watts = Joules of energy per second -- a rate.

Now are we completely confused?

[tinman]

Now are we completely confused?

No-all clear

1A/h=raising the current flow to 1 amp over 1 hour.
1Ah=is a stedy current flow of 1 amp for 1 hour.