A light bulb filament is made of tungsten. At room temperature of 20.0Cthe filament has a resistance
Question:
(a) What is the power dissipated in the light bulb immediately after it is connected to a 120-V emf (when the filament is still at 20.0°C)?
(b) After a brief time, the light bulb filament has changed temperature and it glows brightly.
The current is now 0.833 A. What is the resistance of the light bulb now?
(c) What is the power dissipated in the light bulb when it is glowing brightly as in part (b)?
(d) What is the temperature of the filament when it is glowing brightly?
(e) Explain why light bulbs usually burn out when they are first turned on rather than after they have been glowing for a long time.
Fantastic news! We've Found the answer you've been seeking!
Step by Step Answer:
a Use Eq 1821b Find the power dissipated in the light bul...View the full answer
Answered By
Charles mwangi
I am a postgraduate in chemistry (Industrial chemistry with management),with writing experience for more than 3 years.I have specialized in content development,questions,term papers and assignments.Majoring in chemistry,information science,management,human resource management,accounting,business law,marketing,psychology,excl expert ,education and engineering.I have tutored in other different platforms where my DNA includes three key aspects i.e,quality papers,timely and free from any academic malpractices.I frequently engage clients in each and every step to ensure quality service delivery.This is to ensure sustainability of the tutoring aspects as well as the credibility of the platform.
2+ Reviews
10+ Question Solved
Related Book For 
Physics
ISBN: 978-0077339685
2nd edition
Authors: Alan Giambattista, Betty Richardson, Robert Richardson
Question Posted:
