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Cross-sectinal area (A)Cross-sectional area (A)Fig. 10.6 Cross-sectional areaFig. 10.7 Graph of R vs10.7 ResistivityFrom equations (10.1) and (10.2), we getRoc-(00.3)к is a constant which is called specific resistance of a conducting body or resistivity.Unit of resistivity.From eqn. (10.3),RA← L = 1 metre-Area of |
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