Question

Физические основы электротехники 4
Как решается?

Answer 1

Объяснение:

I1 = 1.8 A

U1 = 10.2 B

I2 = 2.5A

U2 = 9.6 B

E = ?

E = I * ((U/I) + r)

r = (E/I1) - (U1/I1)

r = (E/I2) - (U2/I2)

(E/I1) - (U1/I1) = (E/I2) - (U2/I2)

(E/I2) - (E/I1)  = (U2/I2) - (U1/I1) = (9.6/2.5) - (10.2/1.8) = 3.84 - 5.67 = -1.83

(E*I1 - E*I2) / (I1*I2) = -1.83

E = -1.83 * (I1*I2) / (I1-I2) = -1.83 * 4.5 / (-0.7) == 11.76 В