problem26_90

# problem26_90 - 10 01 7 10 15 7 7 6 Ω × ≤ ≤ Ω × R...

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26.90: a) Fully charged: . C 10 00 . 1 ) V 1000 )( F 10 0 . 10 ( 8 12 - - × = × = = CV Q b) . 1 . 1 where , ) ( 0 C C e C R q R t i C R q R R V i C R t C = - = - = - = - ε c) We need a resistance such that the current will be greater than 1 A μ for longer than . s 200 ) F 12 10 11 ( s 4 10 0 . 2 ) F 10 0 . 1 ( 1 . 1 C 10 0 . 1 V 1000 1 A 10 0 . 1 ) 200 ( 11 8 6 - × - × - - - - × × - = × = R e R s i . 0 10 8 . 1 ln 3 . 18 ) 9 . 90 ( 1 A 10 0 . 1 7 ) 10 8 . 1 ( 6 7 = × - - = × × - - R R R e R R Solving for R numerically we find

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Unformatted text preview: . 10 01 . 7 10 15 . 7 7 6 Ω × ≤ ≤ Ω × R If the resistance is too small, then the capacitor discharges too quickly, and if the resistance is too large, the current is not large enough....
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problem26_90 - 10 01 7 10 15 7 7 6 Ω × ≤ ≤ Ω × R...

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