Asked by Jason
What is the voltage across a capacitor after a time of two constants when a. charging from zero voltage and b. discharging from a fully charged condition?
Answers
Answered by
Elena
U₀ is the max charge of capacitor.
Discharging
U=U₀exp(-t/T)=
=U₀exp(-2T/T)=
=U₀exp(-2)=0.135U₀
Charging
U=U₀{1-exp(-t/T)}=
= U₀{1-exp(-2)}= U₀(1-0.135)=0.865U₀
Discharging
U=U₀exp(-t/T)=
=U₀exp(-2T/T)=
=U₀exp(-2)=0.135U₀
Charging
U=U₀{1-exp(-t/T)}=
= U₀{1-exp(-2)}= U₀(1-0.135)=0.865U₀
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