ch25_p75 - 75. (a) Since the field is constant and the...

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75. (a) Since the field is constant and the capacitors are in parallel (each with 600 V across them) with identical distances ( d = 0.00300 m) between the plates, then the field in A is equal to the field in B : G E V d == × 200 10 5 .. Vm (b) 5 | | 2.00 10 V m . E G See the note in part (a). (c) For the air-filled capacitor, Eq. 25-4 leads to σε = × q A E 0 62 177 10 G Cm (d) For the dielectric-filled capacitor, we use Eq. 25-29: σκε × 0 460 10 G E (e) Although the discussion in the textbook (§25-8) is in terms of the charge being held fixed (while a dielectric is inserted), it is readily adapted to this situation (where comparison is made of two capacitors which have the same
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This note was uploaded on 01/25/2011 for the course PHYSICS 17029 taught by Professor Rebello,nobels during the Spring '10 term at Kansas State University.

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