2007-01-27 00:19:03 · 6 answers · asked by muchacho_fresco 2 in Science & Mathematics ➔ Physics
DC is used for electroplating
bcos with AC the plating would not be proper as direction of cureent changes alternatively.
2007-01-27 00:54:51 · answer #1 · answered by iron muncher 3 · 0⤊ 0⤋
AC alternates between positive and negative. It is a big sine wave right? So DC has a + and - terminal in the water when you electroplate. Whatever elements you are plating are attracted to one or the other. So you have to have a + and - is the answer I suppose. AC is a big wave of +- so you wouldn't get an attraction to one side.
2016-05-24 04:58:45 · answer #2 · answered by Anonymous · 0⤊ 0⤋
DC. Alternating current would undo exactly as much electroplating as it accomplishes! (The integral of a sine wave over time is equal to zero).
In fact, electrical sensors that detect fluid levels in tanks by passing a current through the fluid all use AC so as to avoid electrolysing the solution and clogging up the sensors.
2007-01-27 00:24:57 · answer #3 · answered by poorcocoboiboi 6 · 1⤊ 0⤋
DC is used as we want to have a uniform layer deposited. AC has a fluctuating effect so the electroplating would be uneven.
2007-01-27 00:25:58 · answer #4 · answered by Anonymous · 0⤊ 1⤋
DC provides one way flow of ions.if AC is used reaction changes spontaneously and there would be a no fixed plating.
2015-03-08 21:23:33 · answer #5 · answered by ? 1 · 0⤊ 0⤋
DC is to be used since one electrode has to be the cathode and the other electrode anode, so that metal ions can migrate and deposit. If AC is used, what goes in one half of the cycle is stripped in the other half of the cycle and no plating takes place.
2007-01-27 00:27:27 · answer #6 · answered by Swamy 7 · 0⤊ 0⤋