problem26_50

problem26_50 - 6 . 13 10 6 . 13 6 Cable b) 2 eff eff b L A...

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26.50: a) First realize that the Cu and Ni cables are in parallel. Cu Ni Cable 1 1 1 R R R + = ) ( / / 2 2 Cu Cu Cu 2 Ni Ni Ni a b π L ρ A L ρ R πa L ρ A L ρ R - = = = = So: L ρ a b π L ρ πa R Cu 2 2 Ni 2 cable ) ( 1 - + = × - + × = - + = - - m 10 72 . 1 2 ) m 050 . 0 ( ) m 100 . 0 ( m 10 8 . 7 ) m 050 . 0 ( m 20 8 2 8 2 Cu 2 2 Ni 2 π ρ a b ρ a L π = × = - μ R
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Unformatted text preview: 6 . 13 10 6 . 13 6 Cable b) 2 eff eff b L A L R = = m 10 14 . 2 m 20 ) 10 6 . 13 ( ) m 10 . ( 8 6 2 2 eff = = =-- L R b...
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