Engineering What are the voltages across different points in a circuit?

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To determine the voltages across different points in a circuit, first identify a common reference point to measure potentials. Calculate the voltage at each point relative to this reference. The voltage difference between any two points can then be found by subtracting their respective potentials. Understanding the relationship between resistors and total resistance is crucial for these calculations. This method allows for accurate voltage measurements across various points in the circuit.
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Homework Statement



http://i52.tinypic.com/11loqy0.png

Find Va,Vb,Vab and current flowing from V1.(a,b,ab are subscripts.)

Homework Equations


hmm like
Vx=Rx/Rt x E

The Attempt at a Solution

i can find voltages across resistors but i dunt know how to find voltages across points.
 
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Find the potential at each point with respect to some common reference point. Then find the difference between those potentials.
 

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