Need help understanding adword campaign – PPC

Hi ,
I need to understand how google charges for PPC . I am under the impression that after the ad appreas on the google page,if a user clicks on the ad,i am charged for it .
But through some source i was told that if the landing page i create is long enough and take s time to load,and if at that time the user who clicked on the ad realizes that is not of is intrest or loses patience and decides to exit, then google would not charge for the click as the landing page didnt fully load .
pl let me know if this is true and correct .

See original post by kajotwani