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on this picture what do the circles with +'s and -'s represent?
its of a diode
3 Answers
- 9 years ago
It looks like a pn Junction.
When the PN junction is forward biased, the holes are repelled from the positive terminal and are forced to move towards the junction. Similarly, the electrons are repelled from the negative terminal of the battery and drift towards the junction. The current within the PN junction is the sum of electron current and hole current.
Let me kno if that helps
Source(s): http://electrical-info.com/pn-junction/ - 9 years ago
Without seeing the picture it is hard to tell, but I'm guessing the -'s are negatively charged electrons (electrons are always negatively charged) and the +'s are positive ions :)
Source(s): Memory of Physics A-Level
