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Question
what are the factors affecting resistivity of a conductor ?
what are the factors affecting resistivity of a conductor ?
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Solution
SI unit of resistance is Ohm, Ω; resistivity is Ohm meter, Ω m and that of current is Ampere, A.
Factors affecting resistance are: length of the conductor (L), area of cross-section of the conductor (A).
R α L and R α 1/A
Factors affecting resistivity are: material of the conductor, temperature at which the conductor is used.
SI unit of resistance is Ohm, Ω; resistivity is Ohm meter, Ω m and that of current is Ampere, A.
Factors affecting resistance are: length of the conductor (L), area of cross-section of the conductor (A).
R α L and R α 1/A
Factors affecting resistivity are: material of the conductor, temperature at which the conductor is used.
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