- #1
Mebmt
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1. Homework Statement
The capacitor in an RC circuit with a time constant of 25 ms is charged to 10 V. The capacitor begins to discharge at t = 0 s
2. Homework Equations
τ=RC
ΔVC=(ΔVC)e^-t/τ
3. The Attempt at a Solution
part a) At what time will the charge on the capacitor be reduced to half its initial value?
10 ln 5 = (10)e^-τ/.025s
ln 5 = -τ/.025s
ln 5(.025s)= τ
τ=0.04 s
part b) At what time will the energy stored in the capacitor be reduced to half its initial value?
Not sure, but any hints as to my next step would be appreciated...
The capacitor in an RC circuit with a time constant of 25 ms is charged to 10 V. The capacitor begins to discharge at t = 0 s
2. Homework Equations
τ=RC
ΔVC=(ΔVC)e^-t/τ
3. The Attempt at a Solution
part a) At what time will the charge on the capacitor be reduced to half its initial value?
10 ln 5 = (10)e^-τ/.025s
ln 5 = -τ/.025s
ln 5(.025s)= τ
τ=0.04 s
part b) At what time will the energy stored in the capacitor be reduced to half its initial value?
Not sure, but any hints as to my next step would be appreciated...