Wed April 14, 2010 By: Aditya Pande


Expert Reply
Wed April 14, 2010

Dear student,

In metal wires outside the battery, the real particle flow is only from negative to positive. But inside the battery's wet electrolyte, the charge-flow goes in two opposite directions at the same time. (And if we built a circuit from hoses full of salt water, with no metal conductors used, then all the current would be bi-directional.)

Hope this helps.


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