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If 109electrons move out of a body to another body every second, how much time is approximately required to get a total charge of 1 C on the other body?
  • a)
    120 years
  • b)
    220 years
  • c)
    200 years
  • d)
    180 years
Correct answer is option 'C'. Can you explain this answer?
Most Upvoted Answer
If109electrons move out of a body to another body every second, how mu...
we know that 1 Coulomb = 6.242�10^18 eletrons

given 10^9 electrons take 1 secs

=> 10^9 electrons ------> 1 sec

=> 1 electrons ---------> 1/(10^9) secs

=> 6.242�10^18 ------> 6.242�10^18/ (10^9)

= 6.242�10^9 secs = 6.242�10^9/ (60*60*24*365)  years

=197.93 years
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Community Answer
If109electrons move out of a body to another body every second, how mu...
Q=ne......n=q/e=1/1.6×10*-19.........10*9electron=1s........therefore 1/1.6×10*-19electron =1/10*9×1/1.6×10*-19.
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