Consider two small circular current loops. Suppose the two loops are placed flat on a table close to each other (but not touching) and the current in one loop flows in counterclockwise direction and another in clockwise direction. The interaction of these two loops: A) is zero. B) is attractive. © is repulsive. D could be anything, depending on the magnitudes of the currents. E LU cannot be determined without knowing the radii of the loops.

Consider two small circular current loops. Suppose the two loops are placed flat on a table close to each other (but not touching) and the current in one loop flows in counterclockwise direction and another in clockwise direction. The interaction of these two loops: A) is zero. B) is attractive. © is repulsive. D could be anything, depending on the magnitudes of the currents. E LU cannot be determined without knowing the radii of the loops.

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter12: Sources Of Magnetic Fields

Section: Chapter Questions

Problem 25P: A long, straight, horizontal wire carries a left-to-right current of 20 A. If the wire is placed in...

See similar textbooks

Similar questions

Check Your Understanding In what orientation would a magnetic dipole have to be to produce (a) a maximum torque in a magnetic field? (b) A maximum energy of the dipole?
Check Your Understanding The wire loop forms a full circle of radius R and current I. What is the magnitude of the magnetic field at the center?
The current loop shown in the accompanying figure lies in the plane of the page, as does the magnetic field. Determine the net force and the net torque on the loop if I=10and B=1.5T .
When the current through a circular loop is 6.0 A, the magnetic field at its center is 2.0104 T. What is the radius of the loop?
A long-rigid wire lies along the x-axis and cairns a current of 2.5 A in the positive x-direction. Around the wire is the magnetic field B=2.0i+5.0x2j, With x in meters and B in millitesla. Calculate the magnetic force on the segment of wire between x=2.0m and x=4.0m .
Two long, parallel wires are hung by cords of length 5.0 cm, as shown in the accompanying figure. Each wire has a mass per unit length of 30 g/m, and they carry the same current in opposite directions. What is the current if the cords hang at 6.0° with respect to the vertical?
Two flat, circular coils, each with a radius R and wound with JV turns, ace mounted along the same axis so that they are parallel a distance d apart. What is the magnetic field at the midpoint of the common axis if a current I flows in the same direction through each coil?
Check Your Understanding Using Example 12.1, at what distance would P have to be to measure a magnetic field half of tire given answer?
A solenoid with an iron core is 25 cm long and is wrapped with 100 turns of wire. When the current through the solenoid is 10 A, the magnetic field inside it is 2.0 T. For this current, what is the permeability of the iron? If the current is turned off and then restored to 10 A, will the magnetic field necessarily return to 2.0 T?
The magnetic field perpendicular to a single sire loop of diameter 10.0 cm decreases fron 0.50 T to zero. The re Is made of copper and has a diameter of 2.0 mm and length 1.0 cm. How much charge moves thrnugh the re while tt field is changing?
A wire ismade into a circular shape of radius R and pivoted along a central support.The two ends of the sire are touching a banish that is connected to a &power source. The stricture is between the poles of a magnet such that we can assume there is a uniform magnetic field on the wire. In terms of a coordinate system with origin at the center ofthe ring, magneticfieldisBx=B0,By=Bz= 0. and the ring rotates about the z-axis. Find the torque on the ring siren it is not in the xz-plane.
, A proton, deuteron, and an alpha-particle ae all accelerated from rest through the same potential difference. They then enter the same magnetic field, moving perpendicular to it. Compute the ratios of the radii of their circular paths. Assume that md= 2wmp and ma= 4mp.