Currently Being ModeratedMay 9, 2012 7:17 AM (in response to jagmohan bundela)
What does it do when you plug it in?? Does it make a sound like you plugged it into the computer when you plug it in? Would make a sound much like you hear when you plug it in to charge it from the charger.
Currently Being ModeratedMay 9, 2012 7:22 AM (in response to jagmohan bundela)
Do you have iTunes installed on your computer?
Currently Being ModeratedMay 9, 2012 1:01 PM (in response to jagmohan bundela)
The quickest way (and really the only way) to charge your iPad is with the included 10W USB Power Adapter. iPad will also charge, although more slowly, when attached to a computer with a high-power USB port (many recent Mac computers) or with an iPhone Power Adapter (5W). When attached to a computer via a standard USB port (most PCs or older Mac computers) iPad will charge very slowly (but iPad indicates not charging). Make sure your computer is on while charging iPad via USB. If iPad is connected to a computer that’s turned off or is in sleep or standby mode, the iPad battery will continue to drain.
Apple recommends that once a month you let the iPad fully discharge & then recharge to 100%.
How to Calibrate Your Mac, iPhone, or iPad Battery
At this link http://www.tomshardware.com/reviews/galaxy-tab-android-tablet,3014-11.html , tests show that the iPad 2 battery (25 watt-hours) will charge to 90% in 3 hours 1 minute. It will charge to 100% in 4 hours 2 minutes. The new iPad has a larger capacity battery (42 watt-hours), so using the 10W charger will obviously take longer. If you are using your iPad while charging, it will take even longer. It's best to turn your new iPad OFF and charge over night. Also look at The iPad's charging challenge explained http://www.macworld.com/article/1150356/ipadcharging.html
Also, if you have a 3rd generation iPad, look at
Apple: iPad Battery Nothing to Get Charged Up About
Apple Explains New iPad's Continued Charging Beyond 100% Battery Level
New iPad Takes Much Longer to Charge Than iPad 2
Apple Batteries - iPad http://www.apple.com/batteries/ipad.html
Extend iPad Battery Life (Look at pjl123 comment)
New iPad Slow to Recharge, Barely Charges During Use
Tips About Charging for New iPad 3
Prolong battery lifespan for iPad / iPad 2 / iPad 3: charging tips
Since you are new to iPad:
You can download a complete iPad User Guide here: http://manuals.info.apple.com/en/ipad_user_guide.pdf
Also, Good Instructions http://www.tcgeeks.com/how-to-use-ipad-2/
Apple - iPad - Guided Tours
Watch the videos see all the amazing iPad apps in action. Learn how to use FaceTime, Mail, Safari, Videos, Maps, iBooks, App Store, and more.
iPad How-Tos http://ipod.about.com/lr/ipad_how-tos/903396/1/
You can download this guide to your iPad.
iPad User Guide for iOS 5
Currently Being ModeratedMay 9, 2012 3:41 PM (in response to jagmohan bundela)
Many computer USB ports will not provide the amount of power required to charge the iPad like it would for an iPod or an iPhone. Because of this it is best to use the wall adaptor that the iPad comes with.