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[snip]Back in May, this list had a discussion regarding Ohm's Law and the
resistance of light bulbs. I posted a question on the following series
parallel configuration:
/-----X------X-----\
----- -------
\-----X------X-----/
vs. a single configuration:
---------------X----------------
I wrote that I thought beginning students would guess (assuming constant
resistance) that the total current in each case would be the same and so
each light bulb in the second circuit would be half as bright as the lone
light bulb in the first circuit.
I am alone in the quality of students I get? Do people still think I
underestimate them? Am I guilty of poor understanding of the concepts
myself?
No, you have just defined a "C" student. An "A" or "B" student would
have "absorbed" the material you gave (rather complete, I think!) and
replied correctly. Including the "caveat" constant res. assumption. I
think the answer is one fourth "bright" so (caveat abt. Stefan's, and
Wien's law and eyes' response) total "emission" is equal to one alone.
Am I a "B" or "C"?
Back in the 70's some one created and published a critique of cartoons
called Cartoon Physics. If you got the "C" students in to the 17th
Cent. (i.e.) Galilei instead of Aristotle. You did well enuff.! BTW Who
well do (did) your A students do with that ??.