A rectangular carbon block has dimensions 1 cm ×1cm×50cm.What is the resistance measured between the two square ends?
Answers
Answered by
15
Answer:
0.175
Explanation:
Given A rectangular carbon block has dimensions 1 cm ×1 cm×50 cm.What is the resistance measured between the two square ends?
Given A = 1 cm x 1 cm = 0.01 x 0.01 = 0.0001 sq m = 10^-4, l = 50 cm = 0.5 m
Resistivity of carbon at 20 degree C is 3.5 x 10^-5 ohm-m
We know that
R = ρl / A
= 3.5 x 10^-5 x 0.5/ 10^-4
= 3.5 x 0.5 / 10
R = 0.175 ohm
the resistance measured between the two square ends is o.175 Ω
Answered by
1
Answer:
imensions 1 cm ×1cm×50cm.What is the resistance measured between the two square ends?
Similar questions