Whakaoti mō I
\left\{\begin{matrix}I=\frac{125p}{v}\text{, }&v\neq 0\\I\in \mathrm{R}\text{, }&p=0\text{ and }v=0\end{matrix}\right.
Whakaoti mō p
p=\frac{Iv}{125}
Tohaina
Kua tāruatia ki te papatopenga
240vI=30000p
Whakawhitihia ngā taha kia puta ki te taha mauī ngā kīanga tau taurangi katoa.
\frac{240vI}{240v}=\frac{30000p}{240v}
Whakawehea ngā taha e rua ki te 240v.
I=\frac{30000p}{240v}
Mā te whakawehe ki te 240v ka wetekia te whakareanga ki te 240v.
I=\frac{125p}{v}
Whakawehe 30000p ki te 240v.
30000p=240Iv
He hanga arowhānui tō te whārite.
\frac{30000p}{30000}=\frac{240Iv}{30000}
Whakawehea ngā taha e rua ki te 30000.
p=\frac{240Iv}{30000}
Mā te whakawehe ki te 30000 ka wetekia te whakareanga ki te 30000.
p=\frac{Iv}{125}
Whakawehe 240vI ki te 30000.
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