A 14 watt LED will give you the equal output of a 50 watt halogen.
From 550 to 750 lumens
4.16 Amps
The formula for current is Amps = Watts/Volts. The lamp itself would draw 4.16 amps. Since the voltage of the lamp is 12 volts there is a internal transformer involved in the fixture itself. It doesn't matter what the input (primary) voltage to the transformer is, so long as it meets the manufacturer's specification as to the proper voltage to operate the fixture.
Halogen lamps run hotter than conventional incandescents, and as a result of their hotter filaments, emit a whiter light with more of the light in the visible range, and less in the infrared. A typical 50W halogen emits between 800 and 950 lumens.In contrast, a fluorescent lamp produces more of its output as light instead of heat. Therefore a 13W compact fluorescent light emits the same number of lumens, while an 11-13W LED lamp emits the same 800 lumens (though this is rapidly improving)
It would be pretty much undefined, since the filament of the halogen bulb would fail immediately then there would be an open circuit with no current draw. <<>> The formula for current is Amps = Watts/Volts. The lamp itself would draw 4.16 amps. Since the voltage of the lamp is 12 volts there is a internal transformer involved in the fixture itself. It doesn't matter what the input (primary) voltage to the transformer is, so long as it meets the manufacturer's specification as to the proper voltage to operate the fixture.
Halogen lamps run hotter than conventional incandescents, and as a result of their hotter filaments, emit a whiter light with more of the light in the visible range, and less in the infrared. A typical 50W halogen emits between 800 and 950 lumens.
No you cannot use a standard mr-16 12volt bulb as it will short right when you turn it on. They do sell them but you have to look up 120V mr-16 JCDR or JCDR-C.
For a halogen xenon you'll get a max of about 30 lumens per watt, but more likely around 20. So for a 50 w you get around 1000 lumens.
Fluorescents are always 3-4 times more efficient than halogens which are a version of incandescent bulb.
This question doesn't make sense as asked. In your question, you say 50w lamp. That means the lamp will draw 50 watts. However, the lamp can't be a 230v lamp and a 12v lamp. In either case, most lamps are rated by actual wattage, so look on the side of the box or on the stamp on each lamp.
Since 10w is a factor of 50w, it is automatically the GCF.
The 50W is not a multiviscosity.