1. The problem statement, all variables and given/known data The magnetic field in the region shown below is increasing by 5 T/s. The circuit shown (with R=25 , C=95 µF, dimensions 1 m by 2 m) is inserted into the region as shown. The capacitor is initially uncharged. See Diagram: http://www.webassign.net/userimages/23-31.gif?db=v4net&id=50305 a.) What is the current in the circuit at the moment the circuit is put in the B field? .4 A direction: counterclockwise b) How long will it take the capacitor to charge to 25% of its final charge? ????? c) How much charge will the capacitor hold after a long time (assuming this magnetic field rate increase is maintained)? ???????? 2. Relevant equations Q(t)=Qf(1-e^t/rc) Q=VC 3. The attempt at a solution I'm using Q(t)=Qf(1-e^t/rc) to find time. First, I found Qf by using Q=VC. I know that V=IR so, Q=IRC, =(.4)(25)(9.5e-6) Qf=9.5e-5 Then, I used Q(t)=Qf(1-e^t/rc) .25=9.5e-5(1-e^-t/[(9.5e-5*25)] I'm not getting a real or correct answer for this. Your assistance, any help you could offer is much appreciated. THANK YOU!