P26_079 - 79. (a) Since u = 1 0 E 2 , Eslab = Eair /slab ,...

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79. (a) Since u = 1 2 κε 0 E 2 , E slab = E air slab ,and U = u V (where V = volume), then the fraction of energy stored in the air gaps is U air U total = E 2 air A ( d b ) E 2 air A ( d b )+ κ slab E 2 slab Ab = 1 1+ κ slab ( E slab /E air ) 2 [ b/ ( d b )] = 1 1+(2 . 61)(1
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This note was uploaded on 11/12/2011 for the course PHYS 2001 taught by Professor Sprunger during the Fall '08 term at LSU.

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