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6. A wire has radius 0.5 mm and length 62.8 m.
If the resistivity of the material of the wire is
5 x 10-712-m, find the resistance of the wire.
Answers
Answered by
4
Answer:
40 ohms
Explanation:
r=0.5mm=0.0005m
Cross sectional area of wire = πr² = 3.14×0.0005²=7.85×10^(-7) m²
Resistance = resistivity × length/area
= 5×10^(-7) ×62.8/[7.85×10^(-7)]
= 314/7.85
=40 ohms
Answered by
0
Answer:
answer is 40ohm.
formula...resistivity ×length/area=resistance
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