1. What current flows through a 0.50 mm diameter rod of Aluminum that is 20.0 cm long, when 22 V is applied to it?Resistance of the Aluminum rodΩCurrent flowing through the rod =AResistivity p(ohm m)1.59 x 10-8MaterialSilverCopper1.68 x10-8Copper, annealed1.72 x10Aluminum2.65 x10Tungsten5.6 x10-8Iron9.71 x10Platinum10.6 x10Manganin48.2 x10Lead22 x105

Resistance=ρLA A= π r2 = 1.96x10-7 m2 Resistance = 0.027 ohm

1. What current flows through a 0.50 mm diameter rod of Aluminum that is 20.0 cm long, when 22 V is applied to it? Resistance of the Aluminum rod = Current flowing through the rod = Resistivity p (ohm m) Material Silver 1.59 x 10-8 Copper 1.68 x10- Copper, annealed 1.72 x10 Aluminum 2.65 x10- Tungsten 5.6 x10-8 Iron 9.71 x10 Platinum 10.6 x10 Manganin 48.2 x10 Lead 22 x10

1. What current flows through a 0.50 mm diameter rod of Aluminum that is 20.0 cm long, when 22 V is applied to it? Resistance of the Aluminum rod = Current flowing through the rod = Resistivity p (ohm m) Material Silver 1.59 x 10-8 Copper 1.68 x10- Copper, annealed 1.72 x10 Aluminum 2.65 x10- Tungsten 5.6 x10-8 Iron 9.71 x10 Platinum 10.6 x10 Manganin 48.2 x10 Lead 22 x10

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter9: Current And Resistance

Section: Chapter Questions

Problem 42P: What current flows through a 2.54-cm-diameter rod of Pure silicon that is 20.0 cm long, when 1.00103...

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What current flows through a 2.54-cm-diameter rod of Pure silicon that is 20.0 cm long, when 1.00103 V is applied to it? (Such a rod may be used to make nuclear- particle detectors, for example.)
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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
1. What current flows through a 0.50 mm diameter wire of Platinum that is 80.0 cm long, when 12 V is applied to it? Resistance of Platinum wire %3D Current flowing through the Platinum wire : A. [3 marks] Resistivity p (ohm m) Material Silver 1.59 x 10-8 Соpper 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-$ Manganin 48.2 x10-8 Lead 22 x10-8 Itego cupnlied by th
1. What current flows through a 2.54 cm diameter rod of pure silicon that is 20.0 cm long, when 1.00 x 10°V is applied to it? 2. Find the ratio of the diameter of aluminium to copper wire, if they have the same resistance per unit length. Take the resistivity values of aluminium and copper to be 2.65x 10- 2m and 1.72 x 10-® 2 m respectively. Answers to the following question will be relevant for the in-labs. Please note your answers when going in for the main lab session.
2. The current density in a copper wire of diameter 1.5 mm ig 1.5x 10° A/m2. The number of free electrons per cubic meter of copper is 9 x 1027. Find the: a. currentin the wire and b. magnitude of drift velocity of electrons in the wire.