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| Electrical Quantities |
| Quantity |
Symbol |
Unit Name |
Unit Symbol |
| Electromotive force |
E, e* |
Volt |
V |
| Potential difference |
V, v* |
Volt |
V |
| Current |
I, i* |
Ampere |
A |
| Magnetic flux |
F |
Weber |
Weber |
| Frequency |
f |
Hertz |
Hz |
| Flux linkage |
? |
Weber-turns |
- |
| Resistance |
R |
Ohm |
O |
| Inductance |
L |
Henry |
H |
| Capacitance |
C |
Farad |
F |
| Impedance |
Z |
Ohm |
O |
| Reactance |
X |
Ohm |
O |
| Power,dc,or active |
P |
Watt |
W |
| Power, reactive |
Q |
Volt-ampere reactive |
VAr, var |
| Power, total or apparent |
S |
Volt-ampere |
VA |
| Power factor angle |
? |
- |
°, deg. |
| Angular velocity |
? |
Radians per second |
rads-1 |
| Rotational velocity |
n |
Revolutions per second |
s-1 ,rev s-1 |
| |
|
Revolutions per minute |
min-1, rpm |
| Efficiency |
? |
- |
|
| Number of pairs of poles |
p |
- |
|
| * Capital and small letters designate rms and instantaneous value respectively |
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