the resistivity of a metal wirw is 9 into 10 to the power -10 ohm meter. find the resitence if l=2m and area of crosssection is 7mm
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Answer:ans is 2.571 x 10-4 ohm
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Answer:
2.57x10¹⁰
Explanation:
r=ρ×l/a
resistivity(ρ)=9×10¹⁰
a=7mm
l=2m
r=9x10¹⁰x2/7
=2.57x10¹⁰
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