Internal Resistance: Solving for Battery Emf 9.30 V and Load 60.0 Ω

AI Thread Summary
To determine the internal resistance of a battery with an emf of 9.30 V delivering 103 mA to a 60.0 Ω load, the equation V = E - IR is used. The user initially calculated the internal resistance but received an incorrect result. There is confusion regarding the relationship between total resistance and internal resistance, as well as the application of the formula. Clarification is needed on how to incorporate internal resistance into the calculations, which is not covered in the user's textbook. Understanding this relationship is essential for solving the problem correctly.
goWlfpack
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Homework Statement



A battery having an emf of 9.30 V delivers 103 mA when connected to a 60.0 ohms load. Determine the internal resistance of the battery.


Homework Equations



V = E - IR

The Attempt at a Solution



i plugged in 9.3 for V, .103 for I, and 60, for R... and i got 15.48. red x... any suggestions?
 
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goWlfpack said:

Homework Statement



A battery having an emf of 9.30 V delivers 103 mA when connected to a 60.0 ohms load. Determine the internal resistance of the battery.


Homework Equations



V = E - IR

The Attempt at a Solution



i plugged in 9.3 for V, .103 for I, and 60, for R... and i got 15.48. red x... any suggestions?

What's wrong with just V = IR ?

If you know what the Total Resistance is and it's in series with the 60 ohm resistor ...
 
i don't understand what you mean. I don't know the relationship between R and internal resistance. and internal resistance is sooo not in my textbook.. I am def confused
 
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