Length of a hollow tube is 5 m, its outer diameter is 10 cm and thickness of its wall is 5 mm. If resistivity of the material of the tube is 1.7×10−8Ωm then resistance of tube will be

see full answer

21% of IItians & 23% of AIIMS delhi doctors are from Sri Chaitanya institute !!

An Intiative by Sri Chaitanya

5.6×10−5Ω

2×10−5Ω

4×10−5Ω

None of these

answer is A.

(Unlock A.I Detailed Solution for FREE)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

By using R=ρ. lA; here A=πr22−r12Outer radius r2=5 cmInner radius r1=5−0.5 = 4.5 cmSo R=1.7 × 10−8 × 5π5 × 10−22 − 4.5 × 10−22=5.6 × 10−5 Ω

Watch 3-min video & get full concept clarity