A garland is made up of 12 LED bulbs of 0.5W each connected in series. The garland works on 12V and we light three of them, connected in parallel. a/ calculate the total power b/ calculate the total current consumed c/ if we wanted to replace these LED bulbs with incandescent bulbs, we should put 40W bulbs. These bulbs have a tungsten filament with a diameter of 1mm. Determine the length of a filament of a light bulb. d/ what total current would then be necessary with garlands operating with these filament bulbs? Is this realistic? Plz complete solution otherwise skip.

Delmar's Standard Textbook Of Electricity
7th Edition
ISBN:9781337900348
Author:Stephen L. Herman
Publisher:Stephen L. Herman
Chapter17: Resistive-inductive Series Circuits
Section: Chapter Questions
Problem 1PA: An AC electric motor is connected to a 240-V, 60-Hz source. A clamp-on ammeter with a peak hold...
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A garland is made up of 12 LED bulbs of 0.5W each connected in series. The garland works on 12V and we light three of them, connected in parallel.

a/ calculate the total power

b/ calculate the total current consumed

c/ if we wanted to replace these LED bulbs with incandescent bulbs, we should put 40W bulbs. These bulbs have a tungsten filament with a diameter of 1mm. Determine the length of a filament of a light bulb.

d/ what total current would then be necessary with garlands operating with these filament bulbs? Is this realistic?   

 

 

Plz complete solution otherwise skip.   

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