(a) How are the headlamps of the car wired? In series or in parallel? Explain (b
ID: 1600789 • Letter: #
Question
(a) How are the headlamps of the car wired? In series or in parallel? Explain (b) Where are capacitors used in our every day life. Give three examples explaining how the capacitor is helping in the functioning of the instrument (c) Some modem aircrafts are made primarily of composite materials that do not conduct electricity. What is the problem with these aircrafts? How can it be rectified. (d) When we store food we cover it with plastic food-wrap. Why does plastic food-wrap paper stick to the container when we stretch them. Does it work better of metal or plastic containersExplanation / Answer
1)Car headlights are in parallel. If they were in series, both would go out when the filament of one failed. An important safety factor would be lost.
2)
used for tuning radio sets
used in electric circuits for bypassing AC and stopping DC
used for avoiding electric sparks
used to produce large amount of electric fields using Lyden jars.
used for generation and detection of oscillating electric fields
used to reduce voltage flucgtuations in electric power supplies
used to transmit pulsed signals and to provide time delays. etc.,
used in small toys for kids.
used as recharchable batteries in many appliances.
3)
Large commercial transport aircraft have traditionally been made with aluminum skin over an aluminum frame. Aluminum is a great metal for airplanes since it's light and can be pretty strong when alloyed.
4)
Most thin plastic films effectively get a static electric charge by friction. As it were, plastic wrap is static electricity produced via friction holding up to happen. As you force the plastic wrap from the roll, or as it brushes against your sleeve, the rubbing could make electrons be displaced into one region of the plastic, giving it a negative charge.
The surface that lost the electrons would then have a positive charge. Since opposites are inclined toward one another, the plastic wrap and any oppositely charged surface, regardless of whether that is the plate of sustenance, your sleeve, or considerably another piece of the plastic wrap itself, will stick to each other by electrical attraction,
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