Saturday, May 24, 2008

MP8-2: Problem 31.55 (spoiler)

The answer to this problem is the average of the two voltages; for example, if the two voltages are 2.70V and 1.90V as they were in mine, then the answer is 2.30V. I think Nick had the version where the voltages were 2.30V and 1.10V, so his answer was 1.70V.

I can explain this later if you like; basically since there are two resistors in series of the same amount, the current is the same so the voltage drop must be the same. So, the voltage will drop by half the difference at the point being measured.

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