how to amplify low voltage through op amps

[toqeer rauf]

i have to amplify very low voltage(micro or milli), don't know what's the role of Vcc(+ve & -ve)

 

[Sjouke Burry]

i have to amplify very low voltage(micro or milli), don't know what's
the role of Vcc(+ve & -ve)

I advice you to choose another job.