Question

Q4. A metal wire of resistivity 64X 10ⓇS2cm and length 198cm has a resistance of 782. Calculate
its radius
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Answer 1

Answer:

resitance = resistivity x length/area

=640*198/3.14*r²=782

r²=640*198/3.14*782

r²=51.6

r = √51.6=7.18cm

Explanation:

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