P27_048 - R = R ( A/A )( L /L ) = 4 R.

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48. (a) We use Eq. 27-16. The new area is A 0 = AL/L 0 = A/ 2. (b) The new resistance is
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Unformatted text preview: R = R ( A/A )( L /L ) = 4 R....
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