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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 V5.0 V 20 V12.8 V

abhishek jain , 7 Years ago
Grade 12
anser 1 Answers
Arun

Last Activity: 7 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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