My first article got accepted on ezinearticles. How many articles on ezine can significantly help my blog in terms of traffic and page rank? give me an idea plz.
I don't think there is a limit to the number of articles that can help your site...the more the better. BUT I think that all of your articles should be optimized in order to get you the highest benefits for your blog. For example: I you have only one article linking back to your site, it won't bring you too much PR juice because on ezinearticles there are soooo many other links on the same page. So it won't improve your google rank by itself. On the other hand, if you succeed to list your article on the "most viewed" or the "most published" lists then you will get a lot more traffic, because a link to your article will appear under EVERY article in your category. This will also improve your article's position in google. You will greatly increase your traffic in every of your articles will be listed in one of those two lists. Alternatively, you can aim your articles to very low competition key-words and by getting on the no1 page for those key-words you will then collect the traffic and you will funnel it towards your blog.
Don't put all your articles on Ezine, try other articles directory to get many links from different websites
That will depend on the number of download as well. If 100 webmasters download the articles and link to your website, you will have 101 links from that single article.