Question

A high voltage power supply (10.0 kV) is encased in a metal box and rests on a metal table, which is grounded. Between the power supply’s box and the table is a square sheet of rubber, 2.54 cm thick and 30.0 cm on a side.
(a) What is the resistance of the rubber mat?
(b) Suppose the output of the power supply touches its metal framed box, which touches the rubber mat uniformly over its whole area. How much current flows through the rubber.?
(c) If the rubber mat were to be replaced by a wooden square, what would the square’s thickness have to be to maintain the same protection as the rubber? Assume the areas stay the same.


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  • CreatedAugust 29, 2015
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