12 Questions
What branch of physics and technology is concerned with the design of circuits using transistors and microchips?
Electronics
Who observed the phenomenon where the glass opposite the negative electrode in an evacuated glass tube glows from emitted electrons?
Thomas Edison
Which scientist coined the word 'electron' in 1891?
G.Johnstone Stoney
What did J.J. Thomson discover in 1899 that could be guided by electric and magnetic fields?
Electrons
What type of current did Thomas Edison observe between the filament of an incandescent lamp and a plate in vacuum?
Direct current
What is the phenomenon observed when a current flows between the filament of an incandescent lamp and a plate kept in vacuum near it?
Edison Effect
What did J.J. Thomson's son, G.P. Thomson, discover about electrons?
That they are wave-like phenomena
Which of the following is a characteristic of vacuum tubes?
Higher power consumption
What was the disadvantage associated with vacuum tubes mentioned in the text?
Higher cost compared to transistors
Who discovered the Semiconductor point-contact rectifier effect?
Ferdinand Braun
What kind of device is a vacuum tube?
Device that controls electric current flow in a high vacuum
In what year did the first Transatlantic phone call take place using the TAT-1 cable system mentioned in the text?
1956
Explore the evolution of microelectronics from discrete devices to modern integrated circuits in this brief review by Gourab Dutta from IIT Kharagpur. Learn about the design of circuits using transistors and microchips, and the behavior of electrons in different materials.
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