Circuits 3



First, assume the switch was open for a long time before t=0. The switch then was closed at t=0.
Find the equation for the voltage on the capacitor as a function of time for t>0, where t is in seconds.
vc(t) = volts (t>0)
[ 180/45*exp(-t/0.1) ]

Next, assume the switch was closed for a long time before t=0. The switch was then opened at t=0.
Find the equation for the voltage on the capacitor as a function of time for t>0.
vc(t) = volts (t>0)
[ 180/45*(1-exp(-t/((5+1/(1/15+1/30))*0.02))) ]


Note: This problem has been modified to give immediate feedback. Type an equivalent equation in the boxes above and then click outside the box.


Physlet problem authored by Larry Martin, North Park University

based on CircuitTutor problem by Burkes Oakley