Q.26 : A 10m long wire bas diameter 0.3 m its resistance is 100Ω. Find the resistivity and
conductivity.
Answers
Answered by
0
Answer:
resistivity= 0.70685 (ohm-meter)
Explanation:
resistivity = (resistance × area of cross section) ÷ (length)
Answered by
0
Explanation:
diameter= 0.3m
so radius= r = 0.15m
l = 10m
R = 100 ohm
by the formula R= ρl/A
=> ρ = RA/l = 100 ×π (0.15)² ÷ 10
= 100 × 3.14 × 0.0225 ÷10
= 0.7065 ohm-m
σ = 1/ρ
= 1.415
Similar questions