The figure shows four directions for the velocityvector v of a positively charged particle movingthrough a uniform electric field E (directed outof the page and represented with an encircled dot)and a uniform magnetic field B. (a) Rank directions1,2, and 3 according to the magnitude of the netforce on the particle, greatest first. (b) Of all fourBdirections, which might result in a net force of zero?

If FM and Fe be defined as the magnetic and electric force. The net force on a charged particle of…

Answered: The figure shows four directions for…

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter11: Magnetic Forces And Fields

Section: Chapter Questions

Problem 32P: A particle of charge q and mass m is accelerated from rest through a potential difference V, after...

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A particle of charge q and mass m is accelerated from rest through a potential difference V, after silica it encounters a uniform magnetic field B. If the particle moves in a plane perpendicular to B, shaft is the radius of its circular orbit?
Repeat the previous problem, but with the loop lying flat on the ground with its current circulating counterclockwise (when viewed from above) in a location where Earth’s field is north, but at an angle 45.0° below the horizontal and with a strength of 6.0105T.
In Niels Bohr’s 1913 model of the hydrogen atom, the single electron is in a circular orbit of radius 5.29 × 10−11 m and its speed is 2.19 × 106 m/s. (a) What is the magnitude of the magnetic moment due to the electron’s motion? (b) If the electron moves in a horizontal circle, counterclockwise as seen from above, what is the direction of this magnetic moment vector?
Consider an electron rotating in a circular orbit of radius r. Show that the magnitudes of the magnetic dipole moment and the angular momentum L of the electron are related by: = L=e2m
Check Your Understanding A uniform magnetic field of magnitude 1.5 T is directed horizontally from west to east, (a) What is the magnetic force on a proton at the instant when it is moving vertically downward in the field with a speed of 4 x 107 m/s? (b) Compare this force with the weight w of a proton.
A current loop with magnetic dipole moment is placed in a uniform magnetic field , with its moment making angle θ with the field. With the arbitrary choice of U = 0 for θ = 90°, prove that the potential energy of the dipole-field system is .
Is B constant in magnitude for points that lie on a magnetic field line?
A proton acclerated from rest through a voltage of 750 V enters a region of constant magnetic field. if the proton follows a circular path with a radius of 27cm, what ia the magnitude of the magnetic field? Sketch wiith all vectors (v, B, F, a)
A wire lies on a horizontal surface in the xy plane. Suppose that one end of the wire is at the origin while the other end is located at (5,6) and the wire follows a parabolic path from one end to another. If the wire is carrying a current of 2 A and a magnetic field of 0.1 T directed vertically downward is present, calculate the magnetic force and the magnetic force strength that acts on the wire.
Figure 6 shows four directions for the velocity vector v of a positively charged particle movingthrough a uniform electric field E (out of the page) and a uniform magnetic field B.(a)Rank directions 1, 2, 3 according to the magnitude of the net force on the particle.(b)If the net force is zero, what is the direction of the particle’s velocity?
the force exerted on it by a magnetic field with magnitude 1.65T and perpendicular to the 1. A particle with charge 6.40 x 10-19 C travels in a circular orbit with radius 4.68 mm due to ne rorce exXerted on it by a magnetic field with maanitude 1.65 T and perpendicular to the orbit. (a) what is the magnitude of the linear momenium p of the particle? (b) What is the magnitude of the angular momentum L of the particle? 2. An electron at point A in the figure has a speed vo of 1.41 x 10° m/s. Find (a) the magnitude and direction of the magnetic field that will cause the electron to follow the semicircular path from A to B, and (b) the time required for the electron to move from A to B. -10.0 cm 3. A singly charged ion of Li (an isotope of Lithium) has a mass of 1.16 x 1026 kg. It is accelerated through a potential difference of 220 V and then enters a magnetic field with magnitude 0.723 T perpendicular to the path of the ion. What is the radius of the ion's path in the magnetic field? 4.…
(c) An electron enters a uniform electric field betwen two charged parallel plates of potential difference of 1000 V and 5.0 cm apart as shown in the diagram. 1+ The electron moves with a speed of 2.3 x 107 m s¹¹ in a straight line perpendicular to a magnetic field with magnetic flux density B. Calculate the value of B.

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