Finding the terminal voltage across 16V and 8V batteries?

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To find the terminal voltage across a 16V and an 8V battery, the total current in the circuit is calculated to be 5A. The initial approach involved subtracting the voltage drop due to internal resistance and other resistors from the battery voltage, which was incorrect. Participants in the discussion suggest providing a circuit diagram for better clarity and to assist in evaluating the logic and calculations. Further guidance is requested to resolve the confusion regarding the terminal voltage calculations. Accurate assessment of the circuit is essential for determining the correct terminal voltages.
fishy
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Homework Statement



Find the terminal voltage across the 16-V battery and 8-V battery.

Homework Equations



V=IR

The Attempt at a Solution



I calculated the total current of the circuit to be 5-A, but after that I'm stuck. What I did (and it was wrong) was simply use the voltage of the battery and subtracted the voltage produced by internal resistance as well as the other resistors.

Any guidance would be much appreciated.
 
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Hi fishy, Welcome to Physics Forums.

fishy said:

Homework Statement



Find the terminal voltage across the 16-V battery and 8-V battery.

Homework Equations



V=IR

The Attempt at a Solution



I calculated the total current of the circuit to be 5-A, but after that I'm stuck. What I did (and it was wrong) was simply use the voltage of the battery and subtracted the voltage produced by internal resistance as well as the other resistors.

Any guidance would be much appreciated.

Can you provide a circuit diagram? It's hard to judge your logic and conclusions without seeing the actual problem.
 
Thread 'Correct statement about size of wire to produce larger extension'

Thread 'Correct statement about size of wire to produce larger extension'

The answer is (B) but I don't really understand why. Based on formula of Young Modulus: $$x=\frac{FL}{AE}$$ The second wire made of the same material so it means they have same Young Modulus. Larger extension means larger value of ##x## so to get larger value of ##x## we can increase ##F## and ##L## and decrease ##A## I am not sure whether there is change in ##F## for first and second wire so I will just assume ##F## does not change. It leaves (B) and (C) as possible options so why is (C)...
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