By shuffling her stocking feet across a carpet a person accumulates 1µC of electrons which put her at 200 V above her surroundings. Since air will break down (and conduct electricity) at a field strength of 3 x 104 N/C, when she puts her hand out to touch the doorknob, she will create a spark, losing all her charge with average current which is an amazing, but very brief, 0.8 amp. What is her effective capacitance?
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