Wyznacz podane wielkośći ze wzoru :
a) P=RI do kwadratu Wyznacz R
P=U do kwadratu /R Wyznacz R
P = RI ^2
R = P/ I^2
P = U ^2 / R
U^2/P = R
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P = RI ^2
R = P/ I^2
P = U ^2 / R
U^2/P = R