Loops of Current & Torque Rail gun •A rod of mass 0.720 kg rests on two parallel rails that are L- 12.0 cm apart andd-45.0 cm long. • In the current loop shown, the vertical sides experience forces that are equal in magnitude and opposite in direction. • They create a torque around the vertical axis of the loop. • The rod carries a current of I-48.0 A and moves along the rails without friction. A uniform magnetic field of magnitude 0.240 T is directed perpendicular to the rod and rails. If it starts from rest, what is the speed of the rod as it leaves the rails? Loops of Current & Magnetic Torque Loops of Current & Mag Torque -As with the velocity, only the component of the direction of: the current in the wire e Each of the two sides of Iength a experiences a force given bY F=la B in the directions shown. • Since the magnitudes are the same but in opposite direction, EF,-0. perpendicular to B matters. Each of the two shorter sides of length b experiences a force given by F=/b B coso in the directions shown. Since the magnitudes are the

Loops of Current & Torque Rail gun •A rod of mass 0.720 kg rests on two parallel rails that are L- 12.0 cm apart andd-45.0 cm long. • In the current loop shown, the vertical sides experience forces that are equal in magnitude and opposite in direction. • They create a torque around the vertical axis of the loop. • The rod carries a current of I-48.0 A and moves along the rails without friction. A uniform magnetic field of magnitude 0.240 T is directed perpendicular to the rod and rails. If it starts from rest, what is the speed of the rod as it leaves the rails? Loops of Current & Magnetic Torque Loops of Current & Mag Torque -As with the velocity, only the component of the direction of: the current in the wire e Each of the two sides of Iength a experiences a force given bY F=la B in the directions shown. • Since the magnitudes are the same but in opposite direction, EF,-0. perpendicular to B matters. Each of the two shorter sides of length b experiences a force given by F=/b B coso in the directions shown. Since the magnitudes are the

Physics for Scientists and Engineers, Technology Update (No access codes included)

9th Edition

ISBN:9781305116399

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter30: Sources Of The Magnetic Field

Section: Chapter Questions

Problem 30.5OQ: Two long, straight wires cross each other at a right angle, and each carries the same current I...

See similar textbooks

Similar questions

The current through a circular wire loop of radius 10 cm is 5.0 A. (a) Calculate themagnetic dipole moment of the loop. (b) What is the torque on the loop if it is in a uniform 0.20-T magnetic field such that p and B are directed at 300 to each other? (C) For this position, what is the potential energy of the dipole?
Can a constant magnetic field set into motion an electron initially at rest? Explain your answer.
The two long, parallel wires shown in the accompanying figure carry currents in the same direction. If I1= 10 A and I2= 20 A, what is tire magnetic field at point P?
Check Your Understanding Consider using Ampere’s law to calculate the magnetic fields of a finite straight wire and of a circular loop of wire. Why is it not useful for these calculation?
Two long, straight wires cross each other at a right angle, and each carries the same current I (Fig. OQ30.5). Which of the following statements is true regarding the total magnetic field due to the two wires at the various points in the Figure? More than one statement may be correct. (a) The field is strongest at points B and D. (b) The field is strongest at points A and C. (c) The field is out of the page at point B and into the page at point D. (d) The field is out of the page at point C and out of the page at point D. (e) The field has the same magnitude at all four points.
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 .
The current in a long solenoid of radius 3 cm and 20 turns cm is varied with time at a rate of 2 A/s. Find the electric field at a distance of 4 cm from die center of the solenoid.
How would you orient two long, straight, current carrying wires so that there is no net magnetic force between them? (Hint: What orientation would lead to one wire not experiencing a magnetic field from the other?)
A singly charged ion takes 2.0 × 10-3 s to complete eaglet revolutions in a uniform magnetic field of magnitude 2.0102 T. What is the mass of the ion?
A long solenoid with closely spaced turns carries electric current. Does each turn of wire exert (a) an attractive force on the next adjacent turn, (b) a repulsive force on the next adjacent turn, (c) zero force on the next adjacent turn, or (d) either an attractive or a repulsive force on the next turn, depending on the direction of current in the solenoid?
Find the magnitude and direction of the magnetic field at the point equidistant from the wires in Figure 22.58(a), using the rules of vector addition to sum the contributions from each wire.
Check your Understanding Themagneticfield shown below Is confined to the cylindrical region shown and is changing withtime. Identity those paths for which =EdI0 .