Calculate resistivity of material of a wire having length 1 m, radius 2mm and resistance 5 ohm.
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Given, l = 1m
r = 2mm
= 2/1000 = 0.002m
R = 5 Ohm
ρ = ?
Now, ρ = RA/l
= R×πr²/l
= 5×3.14×(0.002)²/1
= 6.28×10⁻⁷ Ohm metre
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Answer:
Nahi pata
Explanation:
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