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December 13th, 2008, 10:22 PM

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(i) To isolate p, multiply both sides of the equation by A, thus pl=RA, then divide by l, so p=RA/l

(ii) Resistence is measured in ohms ( $\Omega$ ) and the area is measured in square meters ( $m^2$ ), and l is measured in meters (m) so the units of p are $\Omega m^2/m= \Omega m$

Last edited by mr fantastic; December 14th, 2008 at 01:51 AM. Reason: No edit - just flagging this post as a reply that was moved from a duplicate thread

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