E=1.5 B I=1 A r=0.5 Ом U=30 B n=?
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I=n*E/(R+n*r)
n*E=I*R+I*n*r=U+I*n*r
n=U/(E-I*r)=30/(1.5-1*0.5)=30 шт
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E=1.5 B I=1 A r=0.5 Ом U=30 B n=?
===
I=n*E/(R+n*r)
n*E=I*R+I*n*r=U+I*n*r
n=U/(E-I*r)=30/(1.5-1*0.5)=30 шт
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