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kcombs
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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 kilo-ohms, for how long will the current across his chest exceed the danger level of 50 mA?
Homework Equations
q(t)=Qe^(-t/(RC))
i(t)=(-Q/(RC))e^(-t/(RC))
V=q/C
i=(dq)/(dt)
The Attempt at a Solution
I'm not sure where the voltage comes into this question. I assume I don't just ignore that piece of given information. I wrote out all the equation, just like above, and I'm not sure how to put them together to find the correct time.
Thanks in advance!