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zhiyuan3yu5
 2 years ago
Best ResponseYou've already chosen the best response.0http://www.marshall.edu/workshopphysics/images/UNIT22Q7.GIF

eighthourlunch
 2 years ago
Best ResponseYou've already chosen the best response.0Been a while since electronics class, so with an extremely large grain of salt, I'd say 1 and 3...the polarity is reversed, but they'd behave the same in either direction.

zhiyuan3yu5
 2 years ago
Best ResponseYou've already chosen the best response.0so how is the 2nd one different

vannayen
 2 years ago
Best ResponseYou've already chosen the best response.1but i think 1, 2 and3 are the same

eighthourlunch
 2 years ago
Best ResponseYou've already chosen the best response.0@vannayen, I'd trust your judgement ahead of mine...it's been too long. In fact, scrap my original answer. I think you're right. The second one *looks* different, but I think that's just layout, not physics.

theEric
 2 years ago
Best ResponseYou've already chosen the best response.0I think they're all the same :)
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