Una bombilla de incandescencia tiene un filamento de wolframio cuya resistividad es de 5,6 por 10 a la -8 m , su longitud es de
1 answer:
Answer:
R = 0.14 Ω
Explanation:
The resistance of a metal is given by the relation
R =
where ρ the resistivity is 5.6 10-8 Ω m, they also give the length and the cross section (area)
Let's reduce the magnitudes to the SI system
L = 200cm (1m / 100cm) = 2.00m
A = 8.0 10⁻⁷ m²
let's calculate
R = 5.6 10⁻⁸
R = 1.4 10⁻¹ Ω
R = 0.14 Ω
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Answer:
Explanation:
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m: It is the mass
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Substituting the values we have:
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Answer:
Option A