Podcast
Questions and Answers
What branch of physics and technology is concerned with the design of circuits using transistors and microchips?
What branch of physics and technology is concerned with the design of circuits using transistors and microchips?
- Zoology
- Botany
- Geology
- Electronics (correct)
Who observed the phenomenon where the glass opposite the negative electrode in an evacuated glass tube glows from emitted electrons?
Who observed the phenomenon where the glass opposite the negative electrode in an evacuated glass tube glows from emitted electrons?
- Charles Darwin
- J.J. Thomson
- G.Johnstone Stoney
- Thomas Edison (correct)
Which scientist coined the word 'electron' in 1891?
Which scientist coined the word 'electron' in 1891?
- G.Johnstone Stoney (correct)
- Thomas Edison
- J.J. Thomson
- Albert Einstein
What did J.J. Thomson discover in 1899 that could be guided by electric and magnetic fields?
What did J.J. Thomson discover in 1899 that could be guided by electric and magnetic fields?
What type of current did Thomas Edison observe between the filament of an incandescent lamp and a plate in vacuum?
What type of current did Thomas Edison observe between the filament of an incandescent lamp and a plate in vacuum?
What is the phenomenon observed when a current flows between the filament of an incandescent lamp and a plate kept in vacuum near it?
What is the phenomenon observed when a current flows between the filament of an incandescent lamp and a plate kept in vacuum near it?
What did J.J. Thomson's son, G.P. Thomson, discover about electrons?
What did J.J. Thomson's son, G.P. Thomson, discover about electrons?
Which of the following is a characteristic of vacuum tubes?
Which of the following is a characteristic of vacuum tubes?
What was the disadvantage associated with vacuum tubes mentioned in the text?
What was the disadvantage associated with vacuum tubes mentioned in the text?
Who discovered the Semiconductor point-contact rectifier effect?
Who discovered the Semiconductor point-contact rectifier effect?
What kind of device is a vacuum tube?
What kind of device is a vacuum tube?
In what year did the first Transatlantic phone call take place using the TAT-1 cable system mentioned in the text?
In what year did the first Transatlantic phone call take place using the TAT-1 cable system mentioned in the text?
