B Each resistor in the circuit below has a resistance of 6 ohm. The voltage supplied by the battery is 18 V. What is the voltage across and current through the resistor B ? 1. What current flows through a 0.50 mm diameter wire of Platinum that is 80.0 cm long, when 12V is applied to it?Resistance of Platinum wire =ΩCurrent flowing through the Platinum wire =[3marks]Resistivity p(ohm m)MaterialSilver1.59 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 The current flowing through the resistor B is =AThe voltage drop across the resistor B is =V

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The current flowing through the resistor B is = The voltage drop across the resistor B is = V

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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Question

B Each resistor in the circuit below has a resistance of 6 ohm. The voltage supplied by the battery is 18 V. What is the voltage across and current through the resistor B ?

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 =
Ω
Current flowing through the Platinum wire =
[3
marks]
Resistivity p
(ohm m)
Material
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

The current flowing through the resistor B is =
A
The voltage drop across the resistor B is =
V

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