Ampere

The ampere (symbol: A, often shortened to amp) is the standard unit of electric current. An electric current of one ampere is one coulomb per second. The amp is named after André-Marie Ampère who studied electromagnetism'.

The ampere is defined so the elementary charge e'' is 1.602 176 634 × 10−19 C or A•s.

 References 

 Other websites 
 The NIST Reference on Constants, Units, and Uncertainty
 A short history of the SI units in electricity 

Category:SI units