Amper (s taglizit : ampere, s tafrensist : ampère), azamul-is (A), d tigget tidusal n uḍru amestrisiti, kecmen deg unagraw agraɣlan n tiynin seg 1948. Amper d yiwet seg kraḍ tiynin igejdanen n trisiti, akked Ohm (Ω) ed Volt (V). Isem-is Amper yekka-d seg amesfizik afṛansis André-Marie Ampère (seg lqern wis 19), Azal-is Amper d tadwast n uḍru amestrisiti ( I {\displaystyle I} ) n uɛeddi n yiwen culum (C) ɣef amenhar (conductor) deg yiwet tasint (s): C u l u m ( C ) = A m p e r ( A ) . T a s i n t ( s ) {\displaystyle Culum(C)=Amper(A).Tasint(s)} ⟹ {\displaystyle \Longrightarrow } A m p e r ( A ) = C u l u m ( C ) / T a s i n t ( s ) {\displaystyle Amper(A)=Culum(C)/Tasint(s)} == Tizmilin ==