Thank you for your message. I will be glad to review this & assist you further.   This is not normal behavior. Hope you are not hurt.   Are you using the original AC adapter shipped with the system?  Have you tried a different powerpoint?   For my reference, please click on the message tab next to your avatar– click “New Message” & search for my Dell username (Dell-Sreejith R) & send a private message with the service tag, registered name & email address.   How to find the service tag    
Hi. I just bought a Dell g5 and now I notice that when I connect the charger and run my hand through the chassis there is some kind of vibration or shock. It is fine when the charger is not plugged in. I believe it is not normal. What should I do. 
Shock while charging