Calculate the current density.



Hi, i met a problem to calculate the current density in the
electroplating. As i know , to calculate the current density, we muz
know what is the current and the electrode surface area that immersed
in the electrolyte. My question is that the electrode used to
calculate the surface area is cathode or anode, or the average of
both? and lets say the surface area of cathode to be plated is used to
calculate, then what if the cathode is more than one. What i mean is i
have to use the average of the srface area of the cathodes or the
total of all cathode surface area??

.



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