The electronic era began with
A) the invention of photography in 1839
B) the invention of the telegraph in 1842
C) the invention of the Audion tube in 1907
D) the first commercial radio station going on the air in 1920
Correct Answer:
Verified
Q1: On average, Americans listen to radio about
Q3: A disadvantage of the telegraph was
A) it
Q4: The range of frequencies that can be
Q5: A telegraph code where each letter is
Q6: The "father of radio" was
A) Thomas Edison
B)
Q7: What branch of the U.S. government took
Q8: The concept of people and companies paying
Q9: Radio networks are linked by
A) the Internet
B)
Q10: The Radio Act of 1912 was passed
Q11: The requirement of broadcasters to operate in
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