அளவு [quantity ] சின்னம் [symbols] SI அளவு சுருக்கம் [abbreviation ]
length L,l meter m
mass M,m kilogram Kg
time T,t second S
current I,i ampere A
electric charge Q,q coulomb C
electric potential V,v volt V
resistance R ohm ohm
conductance G Siemens S
inductance L hentry H
capacitance C farad F
frequency f hertz Hz
force F,f newton N
energy,work W,w joule J
power P,p watts w
magnetic flux by weber wb
magnetic flux density B tesla T