Can someone help me with this question: Using 1.5V cells with internal resistance of 0.05Ohms.
a. draw a representation of a12V battery. b.Determine the numbers of cells required
c. Calculate the internal resistance of the battery
d. Calculate the battery terminal voltage when the load resistance is 10Ohm.

Question

Can someone help me with this question: Using 1.5V cells with internal resistance of 0.05Ohms. 
a. draw a representation of a12V battery. b.Determine the numbers of cells required
c. Calculate the internal resistance of the battery
d. Calculate the battery terminal voltage when the load resistance is 10Ohm.

nick67 · Answer

From data we have that each cell is represented as an ideal 1.5 V battery with a 0.05 Ohms series resistance:
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The total requested voltage is 12V. We can obtain this voltage serially linking together the following number of cells:
$$N _{C}=\frac{ V _{T} }{ V _{C} }=\frac{ 12 }{ 1.5 }=8$$
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The battery terminal voltage with a load of 100 Ohm can be obtained with the voltage divider formula:
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