Tīpoka ki ngā ihirangi matua
Whakaoti mō I_p, I_c
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Tohaina

I_{p}=\frac{2.1\times 10^{-1}\times 1.6}{1}
Whakaarohia te whārite tuatahi. Hei whakarea i ngā pū o te pūtake kotahi, me tāpiri ō rātou taupū. Tāpiria te 18 me te -19 kia riro ai te -1.
I_{p}=\frac{2.1\times \frac{1}{10}\times 1.6}{1}
Tātaihia te 10 mā te pū o -1, kia riro ko \frac{1}{10}.
I_{p}=\frac{\frac{21}{100}\times 1.6}{1}
Whakareatia te 2.1 ki te \frac{1}{10}, ka \frac{21}{100}.
I_{p}=\frac{\frac{42}{125}}{1}
Whakareatia te \frac{21}{100} ki te 1.6, ka \frac{42}{125}.
I_{p}=\frac{42}{125}
Ka whakawehea he tau ki te tahi, hua ai ko ia anō.
I_{c}=\frac{1.6\times 10^{-1}\times 4.15}{1}
Whakaarohia te whārite tuarua. Hei whakarea i ngā pū o te pūtake kotahi, me tāpiri ō rātou taupū. Tāpiria te -19 me te 18 kia riro ai te -1.
I_{c}=\frac{1.6\times \frac{1}{10}\times 4.15}{1}
Tātaihia te 10 mā te pū o -1, kia riro ko \frac{1}{10}.
I_{c}=\frac{\frac{4}{25}\times 4.15}{1}
Whakareatia te 1.6 ki te \frac{1}{10}, ka \frac{4}{25}.
I_{c}=\frac{\frac{83}{125}}{1}
Whakareatia te \frac{4}{25} ki te 4.15, ka \frac{83}{125}.
I_{c}=\frac{83}{125}
Ka whakawehea he tau ki te tahi, hua ai ko ia anō.
I_{p}=\frac{42}{125} I_{c}=\frac{83}{125}
Kua oti te pūnaha te whakatau.