We have cover SI units and prefixes: The most common we will use are as follows:
P = power measured in Watts
R = resistance measured in Ohms
I = current measured in Amperes
V = voltages measured in Volts
The most common prefixes are;
pico 1x10^-12
nano 1x10^-9
micro = 1x10 ^-6
milli 1x10^-3
unit 1
kilo 1x10^3
mega 1x10^6
giga 1x10^9
tera 1x10^12
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