Yes most laptops have car chargers that can be purchased.
There are some power adapters that are designed for use on airplanes, but they are expensive and only offer a short addition to battery life.
If the laptop came with a car charger or the laptop accessories manual states that one is available, then it is possible to charge the laptop if you have access to these accessories.
No It will give the laptop an overload and will wreck your laptop. Do not do it.
Plug it into a USB socket. If you want to charge it in the car, Scan Computers sell adapters so you can plug a USB stick into a car.
Laptop car adapters can be purchased in many different stores. One of the best places to buy one is Best Buy. One can also purchase them at sites such as Laptop Parts Now, and Amazon.
Amazon marketplace at amazon.com is an excellent website to buy a laptop adapter. Amazon has a wide selection of laptop adapters for low prices. Amazon offers a selection of brand name laptop adapters.
You can buy charging adapters to charge it in the car with you cigarette lighter or power outlet or an adapter to charge it by plugging it into the USB port on your computer
Consult your laptop's manual or seek this information from the manufacturer of your laptop.
What voltage is used in Dell Laptop AC Adapters depends on in which part of the world the laptop gets bought. Europe for example has a diffrent voltage then the USA.
There are car adapters that are available for PSP. Several companies including logitech and motorola offers these car adapters at a very fair price.
The average cost of laptop power adapters is about $80 to $100 USD. You can find more affordable power adapters, but the quality and life span will not be as good.
You have to carry your chargers if you are travelling for long time. The electrical sockets in Canada and USA are identical hence you will not need travel adapters. The domastic electricity also has same voltage in USA and Canada.