Potential difference between points in a series circuit with two resistors

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tmusgrove
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Homework Statement



In a 50 V circuit with a 400 Ohm resistance and a 600 Ohm resistance in series; Point A is between the two resistors and point B is to the right of the 600 Ohm resistor. Charge is moving from right to left.

Homework Equations



V=IR

The Attempt at a Solution


The answer is supposed to be 30 V, but why isn't it 50 V?
 
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Discussion

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In parallel? It seems, from the rest of the question and the answer, like they're in series.
 
Hi tmusgrove! :smile:
tmusgrove said:
In a 50 V circuit with a 400 Ohm resistance and a 600 Ohm resistance in series; Point A is between the two resistors and point B is to the right of the 600 Ohm resistor. Charge is moving from right to left.
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The answer is supposed to be 30 V, but why isn't it 50 V?

How can it be 50 V ?

That's the potential difference across both resistors. :wink:
 
With TinyTim's reminder that the whole potential difference was 50, I could solve the problem. 600 Ohms and 400 Ohms = 1000 Ohms. 600 is 3/5 of 1000. 3/5 of 50 = 30. So, the answer is 30 V.