2.18

2.18 answers

24 November 2010

10:32
· 2.18 recall that electric current in solid metallic conductors is a flow of negatively charged electrons

Conventional Current
· The flow of "imaginary" positive charges from + to -
· Why? Positive charges are repelled by the positive terminal of the battery and attracted to the negative terminal of the battery
· Symbol "I"
· Used in 90% of exam questions!

I


I


I

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Flow of Electrons
· The flow of real negatively charged electrons from - to +
· Why? Negative electrons are repelled by the negative terminal of the battery and attracted to the positive terminal of the battery


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