15 Questions
What is the function of the glass bulb in an incandescent light bulb?
To protect the filament from oxidation
What type of electric current can incandescent bulbs work equally well on?
Both alternating and direct current
What percentage of energy consumed by incandescent bulbs is converted into visible light?
Less than 5%
What is the luminous efficacy of a typical incandescent bulb for 120 V operation?
16 lumens per watt (lm/W)
In which application is the heat produced by filaments in incandescent bulbs used?
Heat lamps in incubators
Why are incandescent bulbs widely used in household and commercial lighting?
They require no external regulating equipment
What is the purpose of the inert gas filled in the glass bulb of an incandescent bulb?
To protect the filament from oxidation
Which type of electric current can incandescent bulbs work equally well on?
Both alternating current and direct current
Why are incandescent bulbs much less efficient than other types of electric lighting?
They lose a large amount of energy as heat
What is the main reason for the low luminous efficacy of incandescent bulbs?
The heat produced by the filaments
In a series circuit, what is the voltage across the network equal to?
The sum of the voltages across each component
What is a circuit composed solely of components connected in parallel known as?
Parallel circuit
What is the current through the network in a parallel circuit equal to?
The sum of the currents through each component
What type of topology can a two-terminal electrical network participate in?
Series or parallel
What is the perspective of referring to a two-terminal 'object' that participates in series/parallel networks as a 'component' in the article?
Matter of perspective
Test your knowledge about incandescent light bulbs, including their structure, functioning, and manufacturing process.
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