Question text
32 A coil contains N turns of insulated copper wire wound on to a cylinder of diameter D. The copper wire has diameter d. The resistivity of copper is ρ. Diameter D is much greater than diameter d. What is the total resistance between the two ends of the coil of copper wire? 4NtD 4Ntd 8NtD 8Ntd A B C D d2 D2 d2 D2
32 A coil contains N turns of insulated copper wire wound on to a cylinder of diameter D. The copper
wire has diameter d. The resistivity of copper is ρ. Diameter D is much greater than diameter d.
What is the total resistance between the two ends of the coil of copper wire?
4NtD 4Ntd 8NtD 8Ntd
A B C D
d2 D2 d2 D2
Select your answer: