30_Ch 17 College Physics ProblemCH17 Current and Resistance

30_Ch 17 College Physics ProblemCH17 Current and Resistance...

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98 CHAPTER 17 (b) If the minimum acceptable power delivered to the cleaner is , then Equations (2) and (3) give the maximum allowable total resistance as min P () 42 , max , max min 1 min 1 2 ti c VV RR R ∆∆ =+ = = PP so 22 2 , max 11 min 1 min 1 min 1 1 22 2 ci VV V  ∆∆ ∆ =−   525 W = 2 V = 1 When , then min P 2 , max 120 V 0.128 3 5 525 W 535 c R 25 W W = −= and, from Equation (4), ( ) 8 min 4 1.7 10 m 15.0 m
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This note was uploaded on 12/09/2011 for the course PHYS 2020 taught by Professor Staff during the Fall '10 term at FIU.

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