R=12 t=7*60=420 c q=4000 Кл U=?
I=q/t U=I*R=q*R/t=4000*12/420=114 B
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R=12 t=7*60=420 c q=4000 Кл U=?
I=q/t U=I*R=q*R/t=4000*12/420=114 B
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