SI Units

The International System of Units (SI) is a modern metric system that is widely used in science, technology, and engineering. It was developed to provide a consistent and coherent framework for measuring physical quantities, and it includes seven base units and several derived units.

Base Units:

The seven base units of the SI system are:

• Meter (m) - length
• Kilogram (kg) - mass
• Second (s) - time
• Ampere (A) - electric current
• Kelvin (K) - thermodynamic temperature
• Mole (mol) - amount of substance
• Candela (cd) - luminous intensity

Prefixes

The SI system uses prefixes to represent multiples and submultiples of the base units. Here are some common prefixes used in the SI system:

Prefix	Symbol	Multiple
atto	a	$10^{-18}$
femto	f	$10^{-15}$
pico	p	$10^{-12}$
nano	n	$10^{-9}$
micro	μ	$10^{-6}$
milli	m	$10^{-3}$
centi	c	$10^{-2}$
deci	d	$10^{-1}$
Base	-	$10^0$
deca	da	$10^1$
hecto	h	$10^2$
kilo	k	$10^3$
mega	M	$10^6$
giga	G	$10^9$
tera	T	$10^{12}$
peta	P	$10^{15}$
exa	E	$10^{18}$
zetta	Z	$10^{21}$

Derived Units

refactor notnow → add more units

Electricity

• Volt