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Questions and Answers
What is the function of the glass bulb in an incandescent light bulb?
What is the function of the glass bulb in an incandescent light bulb?
- To protect the filament from oxidation (correct)
- To regulate the flow of current
- To increase the efficiency of the bulb
- To reduce the manufacturing costs
What type of electric current can incandescent bulbs work equally well on?
What type of electric current can incandescent bulbs work equally well on?
- Variable current
- Alternating current
- Direct current
- Both alternating and direct current (correct)
What percentage of energy consumed by incandescent bulbs is converted into visible light?
What percentage of energy consumed by incandescent bulbs is converted into visible light?
- Less than 5% (correct)
- More than 50%
- 100%
- Around 30%
What is the luminous efficacy of a typical incandescent bulb for 120 V operation?
What is the luminous efficacy of a typical incandescent bulb for 120 V operation?
In which application is the heat produced by filaments in incandescent bulbs used?
In which application is the heat produced by filaments in incandescent bulbs used?
Why are incandescent bulbs widely used in household and commercial lighting?
Why are incandescent bulbs widely used in household and commercial lighting?
What is the purpose of the inert gas filled in the glass bulb of an incandescent bulb?
What is the purpose of the inert gas filled in the glass bulb of an incandescent bulb?
Which type of electric current can incandescent bulbs work equally well on?
Which type of electric current can incandescent bulbs work equally well on?
Why are incandescent bulbs much less efficient than other types of electric lighting?
Why are incandescent bulbs much less efficient than other types of electric lighting?
What is the main reason for the low luminous efficacy of incandescent bulbs?
What is the main reason for the low luminous efficacy of incandescent bulbs?
In a series circuit, what is the voltage across the network equal to?
In a series circuit, what is the voltage across the network equal to?
What is a circuit composed solely of components connected in parallel known as?
What is a circuit composed solely of components connected in parallel known as?
What is the current through the network in a parallel circuit equal to?
What is the current through the network in a parallel circuit equal to?
What type of topology can a two-terminal electrical network participate in?
What type of topology can a two-terminal electrical network participate in?
What is the perspective of referring to a two-terminal 'object' that participates in series/parallel networks as a 'component' in the article?
What is the perspective of referring to a two-terminal 'object' that participates in series/parallel networks as a 'component' in the article?
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