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Stack #4670145

QuestionAnswer
intensitatea curentului în Sistemul Internațional se măsoară în Amperi
intensitatea curentului este egală cu raportul dintre tensiunea electrică de la capetele unui conductor și rezistența electrică a acelui conductor
tensiunea electrică I x R
tensiunea electrică în Sistemul Internațional se măsoară în Volți
rezistența electrică în Sistemul Internațional se măsoară în Ohm
Puterea electrică în Sistemul Internațional se măsoară în Watt
Energia electrică în Sistemul Internațional se măsoară în Joule
altă unitate de măsură acceptată pentru energia electrică kWh
1kWh 3,6MJ
P=U x I Formula puterii electrice
W=U x I x t Formula energiei electrice
Kirchhoff legea 1 Suma algebrică a curenților într-un mod de rețea este zero
Legea a doua a lui Kirchhoff Suma tensiunilor electromotoare este egală cu suma căderilor de tensiune
R1+R2 =Rs
1/R1+1/R2 =1/Rp
E= I x (R + r)
U= I x R
Is= E/r
Intensitatea curentului de scurtcircuit este egală cu raportul dintre tensiunea electromotoare și rezistența internă a sursei
Puterea electrică = I^2 x R
Puterea electrică= U^2/R
Puterea totală generată de sursă E x I
Created by: user-2037817
 

 



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