timpului
Tensiunii electrice
Energiei electrice
Puterii electrice
Adevărat
Fals
W=IUt
W=IU/t
W=I2Rt
W=I2/Rt
W=U2t/R
P=I/U
P=IU
P=I2R
P=U2/R
P=U2R
198J
1980
19800J
198000J
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