An incandescent bulb.
In an incandescent light bulb this is the filament. It is usually made of tungsten.
Depends how long you leave it on for....
yes
Light bulbs convert energy to light. This conversion is inefficient, meaning that not all of the energy will convert to light because of the design of the bulb and the laws of physics. The energy that does not become light is released as heat, and that's why a light bulb gets hot.
120
When measured with an infrared thermometer it read 169.9 degrees F.
A halogen floor lamp with a 300 watt halogen bulb will illuminate a room from wall to wall. While a halogen bulb gives off very radiant, bright light, you must be very careful because it also gets tremendously hot.
The electric power measured in watts is used to heat a filament in the light bulb (which glows because it is very hot). More energy gives more heat. It's very simple.
It depends on the bulb
The resistance of a light bulb varies, depending on the type of bulb, the power rating, and the temperature. A typical incandescent 60 watt bulb, for instance has a cold resistance of about 30 ohms, and a hot resistance of about 240 ohms.
If it is an incandescent light bulb (Gives off heat too hot to touch) it consumes 60 Watts when on and 0 watts when Off. When on it draws about 1/2 amp at 120 VAC.
This depends on the bulb design. A simple tungsten filament bulb might have a surface temperature of the bulb well above 100 C. A fluorescent lamp will be much cooler for the same light output.
You can't get a wart from a hot light bulb.
Technically speaking a bulb and a lamp are the same thing. You can use a 60 watt bulb in a fixture calling for a 40 watt bulb but I wouldn't. The lighting fixture may get to hot, melt and start a fire.
Yes, if there is nothing that may catch fire too close to this bulb. It will get quite hot if left on a long time.
Depends on the wattage of the bulb. It will definitely get hot enough to burn your hand. <<>> Like an electric heater the higher the wattage rating the hotter the unit becomes. A ten watt lamp can be turned out by hand when it is operating, a hundred watt lamp you can not hold onto it long enough to even start turning the lamp out of its socket.