Question

find the resistance of hollow cylindrical pipe of length 1 m whose inner & outer radi are 10 cm & 20 cm respectively assume that the cylindrical pipe is made up of material of resistivity 2×10^-8​

Answer 1

Answer:

A=(π)(2.0mm)2-(π)(1.0mm)2. =3.0×(π)mm2. the resistance of the wire is therefore, R=(ρ)lA=(2.0×10-8(Ω)m)3.0×(π)×10-6m2=2.1×10-3(Ω)

Explanation:

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