These are the kinds of values we need to be able to measure:
Quantity |
Symbol |
Unit |
Current |
I |
Ampere (A) |
Voltage |
V |
Volt (V) |
Resistance |
R |
Ohm (W) |
Frequency |
ƒ |
Hertz (Hz) |
Capacitance |
C |
Farad (F) |
Inductance |
L |
Henry (H) |
Power |
P |
Watt (W) |
These are the prefixes used to describe very large or very small values
Value |
Prefix |
Symbol |
1012 |
tera |
T |
109 |
giga |
G |
106 |
mega |
M |
103 |
kilo |
k |
10-3 |
milli |
m |
10-6 |
micro |
m |
10-9 |
nano |
n |
10-12 |
pico |
p |
10-15 |
femto |
f |