Help finding replacement power cable

Hello,

I have a laptop from Samsung with a power supply. I had the odd occurance yesterady of the power cable that goes between the wall and the power supply get worn out and shoot sparks. The power supply itself, perfectly fine. I've already ordered a replacement power supply, but I also would like to get a replacement power cable so I can have two fully functioning units. The problem is I am not sure what to type to search for the cable as results for power cable and this laptops name gives power supplies always.

The laptop is a Samsung NP300E5C, but the power cord is the same for many many laptops. My mom has a netbook from like 2009 that uses the same cable, its got three lines for power, and looks like 3 circles.
http://ecx.images-amazon.com/images/I/31hm%2Bicb6OL.jpg

The piece that goes into the power supply looks like in that picture, but I am in the US. If someone could help me find one I would be very grateful.
 
Yes indeed. Thank you for that, knowing the name of the connection, it didn't take but a minute search on google, then on Ebay to confirm that was what I needed and find one. I can order this one for $7, but I will check try to find a cheaper but either way that finds what I need so thanks for the help.