A bulb has marked (100W-200V). What is the resistance of filament?
Answers
Answer:
Step-by-step explanation:
Electric power is delivered in two generally accepted mediums,
120V , 60 HZ, North America, and half of Japan.
240V, 50 Hz, in India, S.America, Mexico, UK and former Colonies such as Australia, Africa, Europe, Asia and the CIS group of countries formerly known as the USSR.
So, there are no places in the world where you will need a 100W , 200V light bulb that runs on electricity.
Even if you could get one, there is the complications of being an ‘odd voltage source”.
Other than Unobtanium metals, and non standard voltages, Quora is certinly the place to ask questions that would be in the back of an electric engineering or physics text book.
But how do you know the answer is right?
This question says “electric bulb”, but does not specify the type of electric bulb.
So what are Quoran’s supposed to do? Ask for details that are missing.
There are four types of light bulb currently manufactured.
Two of them reference the ‘nominal’ incandescent light bulb, of 100W by having power consumption amounts of 25% and 20% of the bulb power. (CFL and LED)
Incandescent (answer given in other respondents)
Halogen (100W equivalent is 72 Watts Halogen or 28% better).
CFL is 25% of the Nominal Incandescent power.
LED is 20% of the Nominal Incandescent power.
All four of these have different current and resistance values.
Answer:
400Ω
Explanation:
= 200V | = 100W
We know resistance R =
R = (200^2)/100 = 40000/100 = 400Ω