4. A total of 3.0 x 10^6 excess electrons are placed on an initially electrically neutral wire of length 2.5 m along the x-axis. The center of wire is located at (x,y) = (0,0) m. The point P is at a perpendicular distance of 0.1 m away from the center of wire at P(x,y) = (0,-0.1)m. Assume that 2.5m is close enough to "infinitely long." The permittivity of a vacuum epsilon E0 = 8.85 x 10^-12 C^2/N.m^2, and electron charge qe = -1.6 x 10^-19 C. a) What is the magnitude of the electric field at a point P? b) What is the direction of electric field at the point P(x,y) = (0,-0.1)m? Select one. Upward (+y), Downward (-y), Out of page (+z), into the page (-z), right (+x), or left (-x)c) Now, a 4.0 A current runs through the wire along the positive x-axis. What is the direction of the magnetic field at the point P(x,y) = (0,-0.1)m? Upward (+y), Downward (-y), Out of page (+z), Into the page (-z), Right (+x), or Left (-x) d) What is the magnitude of the magnetic field at the point P(x,y) = (0,-0.1) m? ( u0 = 4 pi x 10^-7 T * m/A) of 7Page <4. A total of 3.0 × 106 excess electrons are placed on an initially electrically neutral wire oflength 2.5 m along the x-axis. The center of wire is located at (x, y) = (0,0) m. The point Pis at a perpendicular distance of 0.1 m away from the center of wire at P(x, y) =(0, –0.1) m. Assume that 2.5 m is close enough to “infinitely long." The permittivity of ac2,and electron charge q. = -1.6 × 10-19 C.N-m2vacuum ɛn = 8.85 × 10-12a) What is the magnitude of the electric field at a point P?b) What is the direction of electric field at the point P(x, y) = (0,– 0.1) m? Select one.Upward (+ŷ), Downward (-ŷ), Out of page (+2), Into the page (-2),Right (+2), or Left (-2)c) Now, a 4.0 A current runs through the wire along the positive x-axis. What is thedirection of the magnetic field at the point P(x, y) = (0,– 0.1) m?Upward (+ŷ), Downward (-ŷ), Out of page (+2), Into the page (-2),Right (+£), or Left (-£)d) What is the magnitude of the magnetic field at the point P(x,y) = (0, – 0.1) m? (µo =4n x 10-7 T m/A)MacBook Air80DIIDDF3F4

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Answered: 4. A total of 3.0 x 106 excess…

University Physics Volume 3

17th Edition

ISBN:9781938168185

Author:William Moebs, Jeff Sanny

Publisher:William Moebs, Jeff Sanny

Chapter9: Condensed Matter Physics

Section: Chapter Questions

Problem 9.1CYU: Check Your Understanding Why is the potential energy associated with the exclusion principle...

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4. A total of 3.0 x 10^6 excess electrons are placed on an initially electrically neutral wire of length 2.5 m along the x-axis. The center of wire is located at (x,y) = (0,0) m. The point P is at a perpendicular distance of 0.1 m away from the center of wire at P(x,y) = (0,-0.1)m. Assume that 2.5m is close enough to "infinitely long." The permittivity of a vacuum epsilon E0 = 8.85 x 10^-12 C^2/N.m^2, and electron charge qe = -1.6 x 10^-19 C. a) What is the magnitude of the electric field at a point P? b) What is the direction of electric field at the point P(x,y) = (0,-0.1)m? Select one. Upward (+y), Downward (-y), Out of page (+z), into the page (-z), right (+x), or left (-x) c) Now, a 4.0 A current runs through the wire along the positive x-axis. What is the direction of the magnetic field at the point P(x,y) = (0,-0.1)m? Upward (+y), Downward (-y), Out of page (+z), Into the page (-z), Right (+x), or Left (-x) d) What is the magnitude of the magnetic field at the point P(x,y) = (0,-0.1) m? ( u0 = 4 pi x 10^-7 T * m/A)

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Page <
4. A total of 3.0 × 106 excess electrons are placed on an initially electrically neutral wire of
length 2.5 m along the x-axis. The center of wire is located at (x, y) = (0,0) m. The point P
is at a perpendicular distance of 0.1 m away from the center of wire at P(x, y) =
(0, –0.1) m. Assume that 2.5 m is close enough to “infinitely long." The permittivity of a
c2
,and electron charge q. = -1.6 × 10-19 C.
N-m2
vacuum ɛn = 8.85 × 10-12
a) What is the magnitude of the electric field at a point P?
b) What is the direction of electric field at the point P(x, y) = (0,– 0.1) m? Select one.
Upward (+ŷ), Downward (-ŷ), Out of page (+2), Into the page (-2),
Right (+2), or Left (-2)
c) Now, a 4.0 A current runs through the wire along the positive x-axis. What is the
direction of the magnetic field at the point P(x, y) = (0,– 0.1) m?
Upward (+ŷ), Downward (-ŷ), Out of page (+2), Into the page (-2),
Right (+£), or Left (-£)
d) What is the magnitude of the magnetic field at the point P(x,y) = (0, – 0.1) m? (µo =
4n x 10-7 T m/A)
MacBook Air
80
DII
DD
F3
F4

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