求unknow.
------solution----------
since the 1.5V cell is dircetly across the 5 ohm resistor,
I" = 1.5/5 = 0.3A
The voltage across the 10 ohm resistor
V = 2 - 1.5 = 0.5V , so
I' = 0.5/10 = 0.05 A
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點解計I"既時候,可以唔洗理個2V
更新1:
唔明 -,-
更新2:
唔明點解錦就可以計到0.3A
更新3:
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