Why does anode attract anions if anode is positively charged while anions are negatively charged ? Same is with cathode ...cathode is negatively charged and attract positively charged cations ..why is it so?
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\$\begingroup\$ just linking, just linking: av8n.com/physics/anode-cathode.htm \$\endgroup\$– Sredni VashtarMar 30, 2017 at 7:01
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1\$\begingroup\$ "like" charges repel, "unlike" charges attract. \$\endgroup\$– Andy akaMar 30, 2017 at 7:07
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I did a search for you and found this page
http://electronics.stackexchange.com/questions/29992/why-is-the-anode-positive-if-anions-are-negative
here is the answer by a member named clabacchio :
In the diode, and specifically in the so-called depletion region, there is diffusion of carriers (electrons and holes) from one region to the other. Since the Anode is positively doped, it will attract electrons from the cathode, and this will cause the formation of Anions in its side of the depletion region.
