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OpenStudy (anonymous):
the current through a device is 0.30 A, and the resistance in the device is 40 ohms. How many 1.5 V batteries are required to run the device? 2, 4 , 6 , or 8 ? :/
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OpenStudy (michele_laino):
the needed voltage drop is: 40*0.3=...volts
OpenStudy (anonymous):
we get 12?
OpenStudy (michele_laino):
so the request number of batterie is: 12/1.5=...?
OpenStudy (michele_laino):
batteries*
OpenStudy (anonymous):
8! ohh okay so that is our solution?
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OpenStudy (michele_laino):
yes!
OpenStudy (anonymous):
yay thanks!:D
OpenStudy (michele_laino):
:)
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