I am brewing rice wine using baker's yeast. Can i use baker's yeast for brewing rice wine? Will it affect to the quality of wine? I want to also know, can it get over fermented? What happens during over fermentation? Will it affect to the alcohol content?
Baker's yeast is not bred for producing rice wine which is high in alchohol. You should try using some yeast that was bred specifically for that purpose. I don't know if you want to make something like sake (not all rice wines = sake), but the major American yeast suppliers both sell high quality yeasts made specifically for sake.
These area all good products with alcohol tolerances in the 14-16% ABV range. You can use other yeasts with high alcohol tolerances as well, but you may not get the flavors you're looking for.
Sake making also requires several other steps, including growing the koji mold spores on the rice. This is necessary in order to get fermentable sugar for the yeast to eat. Michael Tonsmeire documented the process on his Mad Fermentationist blog. You may want to get a book or do additional research on homebrewing rice wine/sake.
Bakers yeast may not be alcohol tolerant, and therefore not produce the result you want.