I understand the voltage will never actually reach absolute zero, however I am after the "practicle" time for the capacitor to reach "practicle" zero voltage.
Hi there,
okay my Question is on discharging capacitors.
the equation for instantanious voltage of a capacitor whilst dischargeing is : v=Vi*e^-t/R*C
However I am not sure how to find the time for a capacitor to completely discharge to zero volts.
When I transpose for t...
Homework Statement
Determine how long it takes the capacitor to discharge to a value of 3v
C=1.5E-6F
R=1E3ohms
Vi=25v
Vf=3v
Homework Equations
T=RC
v=Vi*e^(t/T)
The Attempt at a Solution
T=1000*1.5E-6
T=1.5E-3s
Vf(3v) is 12% of the initial 25v
Im having trouble...