If an electric and an acoustic were the same thing, they wouldn't have made an electric. Hope that gets the point accross.
(quote from previous posting by bigdjindustriez)
I Do play both. But I stand by my decision to learn on an acoustic always. Yes I know there are different neck shapes, such as flat, rounded and scalloped. electric guitars created for swing bands were hollow body electrics, made in a simillar fashion to the acoustic, where as a strat type guitar is made from a solid piece of hardwood. The last electric guitar I made was a solid piece of maple, and it sounds quite different from an acoustic.
(also quoted by above)
What I replied to above (#1 quote) there was never any questioning your choice to learn acoustic first. The reply was to if there the same they would not have made electrics. (#2) Yes you will get a different sound from electric than the sound from an acoustic.
The sound coming from the ocillation of the string vibration produced by striking (strumming) of the string creates a sound which is amplified in a sound chamber and is heard as the sound is echoed in the sound chamber (acoustic guitar body).
Since an electric guitar is made for the most part out of a solid piece of wood(one piece or 2 & 3 pieces glued together) it does not have a sound hole (althoght semi hollow bodies are made) and have magnetic pickups to help the amplify the sound.
Once again the vibration of the string ocilating due to striking (strumming of the string) is picked up by an electromagnetic pickup. The pickup turns the vibration into sound waves and the sound siginature is amplified through an amplifier. That's when you hear the sound of the guitar. So in theory they are the same producing sound by the same principle.
The maple wood you made your electric guitar will produce alot of highs hence forth the tonal difference of the electric vs the acoustic. Where as if you would have had a maghogany back with a maple top you tonal characteristics would have been warmer.