Answered: If the magnitude of the drift velocity…

If the magnitude of the drift velocity of free electrons in a copper wire is 7.84x104 m/s, what is the electric field in the conductor?

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter9: Current And Resistance

Section: Chapter Questions

Problem 81CP: A 10-gauge copper wire has a cross-sectional area A=5.26mm2 and carries a current of I=5.00A . The...

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Question

Question 4

is the current in the element when it is connected to 240 V? (b) How much charge
passes through the element in 50 min? (Assume direct current.)
(Ans. 28 A, 8.4x104 C)
Calculate the current density in a gold wire at 20°C, if an electric field of 0.740 V/m
exists in the wire.
4.
If the magnitude of the drift velocity of free electrons in a copper wire is 7.84x104
m/s, what is the electric field in the conductor?
A 12- V battery causes a current of 0.60 A through a resistor. (a) What is its
resistance, and (b) how many joules of energy does the battery lose in a minute?
(Ans. 20 2, 430 J)
6.
An electric heater is constructed by applying a potential difference of 110 V across
3.
5.

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