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If a capacitor is placed across a 20 V source, what will be the amount of charge after 5 tc? 13.5 V 5.0 V 20 V 12.8 V

  •  If a capacitor is placed across a 20 V source, what will be the amount of charge after 5 tc?
  • 13.5 V
  •  5.0 V
  • 20 V
  •  12.8 V

Grade:12

1 Answers

Arun
25750 Points
6 years ago
Dear Abhishek
Voltage = 20 v.
So, the amount of charge after 5tc= Vin * (1-e^(-t/rc))
= 20*0.993
=19.86
And its app. = 20 v.
Hence option C is correct.
Regards
Arun (askIITians forum expert)

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