Originally Posted by bachler
All electric Appliances have what is called internal resistance. when they are plugged in they draw, As I recall, My laptop computer converter has a near 3 amps = 360 watt draw,. I was supprised at some of the things that draw even my Shaver, The wife says keep it plugged in. I say OK:: Life is good.
As jcthorne mentioned, any laptop drawing 360 watts is EXTREMELY dangerous. Do not plug it in again. However, I'm guessing that you saw the output current specifications. Most laptop power bricks supply perhaps 3-6 amps at between 10 and 24 volts (usually) for a total power output of about 60 to 120 watts depending on the size of the laptop.
I apologize for the lecture, but electricity can be hazardous if you don't know what you are doing. I did not understand what you were trying to do with the 2 watt light bulb, but a "shunt" (by definition) is NOT in series - rather, a shunt is always a parallel circuit (which is NOT the correct way to measure current on an unknown load).
I strongly recommend that you use one of the third party devices to automatically and safely insert an ammeter in series with the device you are measuring.