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electrical resistivity refers to the oppose of electrical charges from flowing or moving.
- SI unit of electrical resistivity is Ohm . According to ohm ' s. law. R = V/I. ( R equals to resistance) V = potential difference , I = current
- since resistance is directly proportional to length when the length of the wire is doubled the resistance will also doubled . incidence resistance is indirectly proportional to electric current the electric current will become half as resistance is doubled
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