While performing cathode ray experiments, it was observed that there was no passage of electric current under normal conditions. Which of the following can account for this observation ?
A. Air is a poor conductor of electricity under normal conditions
B. Carbon dioxide is present in air
C. Dust particles are present in air
D. None of the above
Answer:A
While performing cathode ray experiments, it was observed that there was no passage of electric current under normal conditions. Which of the following can account for this observation ?
A. Air is a poor conductor of electricity under normal conditions B. Carbon dioxide is present in air C. Dust particles are present in air D. None of the above