A particle with charge q is moving along the i direction parallel to a straight wire with current also along i. j k Which of the following statements are TRUE? 1. The direction of the magnetic force on the charge depends on whether the particle is moving in the + direction or direction. II. The magnetic field of the wire will change its direction depending on the sign of the charge. III. The magnetic force on the particle will reverse its direction whether the particle is above or below the wire. IV. The magnetic force on the particle is along the k direction. O A. I & III O B. II & IV O C. I & IV O D. II & III *

A particle with charge q is moving along the i direction parallel to a straight wire with current also along i. j k Which of the following statements are TRUE? 1. The direction of the magnetic force on the charge depends on whether the particle is moving in the + direction or direction. II. The magnetic field of the wire will change its direction depending on the sign of the charge. III. The magnetic force on the particle will reverse its direction whether the particle is above or below the wire. IV. The magnetic force on the particle is along the k direction. O A. I & III O B. II & IV O C. I & IV O D. II & III *

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter11: Magnetic Forces And Fields

Section: Chapter Questions

Problem 21P: (a) Aircraft sometimes acquire small static charges, Suppose a supersonic jet has a 0.500C charge...

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Concept explainers

Magnetic Field Of Coaxial Cable

The word coaxial means same axis. So for a long straight cable to be coaxial, it must have concentric cylindrical shaped conductor around it. Coaxial cable (popularly called ‘coax’) has various applications ranging from current conductors to radiofrequency signal transmitters. This cable has lower emission losses and provides protection from electromagnetic interference which allows signals with less power to transmit over longer distances.For example, currents produced in the pickup of a stereo turntable generally travel to the amplifier through a coaxial cable.The self-inductance of a coaxial cable is another important characteristic, because it influences the propagation of electrical signals in the cable.

Question

A particle with charge q is moving along the i direction parallel to a straight
wire with current also along i.
j
k
Which of the following statements are TRUE?
1. The direction of the magnetic force on the charge depends on whether the particle is
moving in the + direction or direction.
II. The magnetic field of the wire will change its direction depending on the sign of the
charge.
III. The magnetic force on the particle will reverse its direction whether the particle is
above or below the wire.
IV. The magnetic force on the particle is along the k direction.
O A. I & III
O B. II & IV
O C.
I & IV
O D. II & III
*

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