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P_E= E·I

E = V

I = A

P_E = W

W_E= E·Q

E = V

Q = C

W_E = J

W_E= E·I·t

E = V

I = A

t = seg

W_E = J

P_u= U·I = E·I - r·I²

U = V

I = A

P_u = W

W_u= U·I·t

U = V

I = A

t = seg

W_u= J

η = U·I·t/E·I·t

U = V	I = A	t = seg
	E = V

η =

η = P_U/P_T = W_U/W_T = U/E

P_U= W

P_T = W

η =

η = 1 - (r·I/E)

r = W

I = A

E = V

η =