Should a phonegap plugin be declared in the config.xml file?

Question

I am a newbie in phonegap development so I have a couple of questions:

1) I am using the accelerometer plug-in. I read in the manual that i need to declare the plugi

Answer 1

You may want to check this for accelermator plugin: Phonegap Acceleramator plugin.

Also you can search there about any plugin you need