An aluminum wire has radius 0.25mm and length 75m. If the resistance of the wire is 10ohm l. Calculate the resistivity of aluminum
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Answered by
7
heya....
Resistance R = ρl/A, where ρ is the resistivity, l the length and A the area of cross section of the wire.
ρ = RA/l
= 10 x π x (0.25 x 10-3)2/75 ohm.m
= 0.026 x 10-6 Ω m.
= 2.6 x 10-8 Ω m.
tysm.........#gozmit
Resistance R = ρl/A, where ρ is the resistivity, l the length and A the area of cross section of the wire.
ρ = RA/l
= 10 x π x (0.25 x 10-3)2/75 ohm.m
= 0.026 x 10-6 Ω m.
= 2.6 x 10-8 Ω m.
tysm.........#gozmit
Answered by
2
Resistance=pl/A,Where p is the resistivity,I rhe length and is the area of cross section of the wire.
P=RA/l
P=10×π×(0.25×10-3)2/75 ohm.m
P=0.026×10-6 m.
P=2.6×10-8m.
P=RA/l
P=10×π×(0.25×10-3)2/75 ohm.m
P=0.026×10-6 m.
P=2.6×10-8m.
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