1. What current flows through a 0.50 mm diameter rod of annealed Copper that is 90.0 cm long, when 12 V isapplied to it?Resistance of the annealed Copper =Current flowing through the annealed Copper =A[3 marks]Resistivity pMaterial(ohm m)Silver1.59 x 10-8Copper1.68 x10-8Copper, annealed1.72 x10-8Aluminum2.65 x10-8Tungsten5.6 x10-8Iron9.71 x10-8Platinum10.6 x10-8Manganin48.2 x10-8Lead22 x10-8

Using Ohms lawV = I R we find current and using R = ρ L/A we find resistance

1. What current flows through a 0.50 mm diameter rod of annealed Copper that is 90.0 cm long, when 12 V is applied to it? Resistance of the annealed Copper = Current flowing through the annealed Copper = A [3 marks]

1. What current flows through a 0.50 mm diameter rod of annealed Copper that is 90.0 cm long, when 12 V is applied to it? Resistance of the annealed Copper = Current flowing through the annealed Copper = A [3 marks]

Inquiry into Physics

8th Edition

ISBN:9781337515863

Author:Ostdiek

Publisher:Ostdiek

Chapter7: Electricity

Section: Chapter Questions

Problem 13P

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Question

1. What current flows through a 0.50 mm diameter rod of annealed Copper that is 90.0 cm long, when 12 V is
applied to it?
Resistance of the annealed Copper =
Current flowing through the annealed Copper =
A
[3 marks]
Resistivity p
Material
(ohm m)
Silver
1.59 x 10-8
Copper
1.68 x10-8
Copper, annealed
1.72 x10-8
Aluminum
2.65 x10-8
Tungsten
5.6 x10-8
Iron
9.71 x10-8
Platinum
10.6 x10-8
Manganin
48.2 x10-8
Lead
22 x10-8

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