R1=1.8 I1=0.7 A R2=2.3 I2=0.56 A r=? E=?
E=I1*R1+I1*r=I2*R2+I2*r
r=(I1*R1-I2*R2)/(I2-I1)=(0.7*1.8-0.56*2.3)/(0.56-0.7)=0.2 Ом
E=I1*(R1+r)=0.7*(1.8+0.2)=1.4 B
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Дано:
V1=2V0, t0=273∘ C, ΔT−?
Решение:
1/T0=2/(T0+ΔT)
2T0=T0+ΔT
ΔT=T0
ΔT=t0+273
ΔT=273+100=373К
Ответ 373 кельвин
1. Физика.