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What is a resistivity? |
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Answer» The resistence offered by a wire of unit length and unit crosectional area is called resistivity. Si unit is ohm meter The resistivity of a substance is numerically equal to the resistance of a rod of that substance which is 1 metre long and 1 square metre in cross section A resistivity is a resistance if the lenght of the conductor is equal to 1 m and cross section area is 1 m sqare... |
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