Recent content by kcombs

  1. kcombs

    RC circuit: time current exceeds 50mA in capacitor discharge

    I just got t=.184 s, which is the correct answer. Thanks for you help! I was definitely overthinking that!
  2. kcombs

    RC circuit: time current exceeds 50mA in capacitor discharge

    Actually, I'm not sure it's correct but this is what I did: q=VC i(t)=(V/R)e^(-t/(RC)) which, due to t=0, simplifies to i(t)=V/R When I plugged in numbers I got .117 A
  3. kcombs

    RC circuit: time current exceeds 50mA in capacitor discharge

    Okay. I can calculate that, but how does voltage come into the picture?
  4. kcombs

    RC circuit: time current exceeds 50mA in capacitor discharge

    Homework Statement Suppose a 120 micro-farad capacitor from a camera flash unit retains voltage of 210 V when an unwary student removes it from the camera. If the student accidentally touches the two terminals with his hands, and if the resistance of his body between his hands is 1.8...