The electrical resistivity of silver is 1.6x10^-6Ωm. What will be the resistance of a silver wire of length 10m and cross-sectional area 2x10 ^-3 m²?
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resistence of the wire is equal to 8×10^-3 ohm
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resistance is directly proportional to length
R~l
Resistance is inversely proportional to area cross section
R=L/A
R=pl/A(p =restivity
1.6×10^-6×10m/2×10^-3m2
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