College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
expand_more
expand_more
format_list_bulleted
Related questions
Concept explainers
Question
Transcribed Image Text:Example 3: A positively charged particle of mass m = 0.0004 g and charge q = 53 μC is moving horizontally
towards the wire carrying current I at the instant shown in the figure. The speed of the particle is v= 3900 m/s.
(a) What is the direction of the current to keep the charge floating at this instant? (b) What is the current? Here
r = 0.3 m. Hint: Gravity is not negligible in this problem. You must consider the weight of the particle when you
calculate magnetic force. Follow the steps below.
Z
(out)
X
r
I
Steps:
1) Magnitude the magnetic force
N; direction
2) Magnitude the magnetic field B calculated from the magnetic force
at the location of the charge.
T; RHR#1 direction
3) Calculate the current from the magnetic field generated by a long straight wire.
Amp; RHR # 2: direction of I
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution
Trending nowThis is a popular solution!
Step by stepSolved in 4 steps
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.Similar questions
- The moving rod in the figure is 13.5 cm long and is pulled at a speed of 16.0 cm/s. Force on electron a) If the magnetic field is 0.790 T, calculate the emf developed. Express your answer to three significant figures and include appropriate units. b) Calculate the magnitude of the electric field felt by the electron rod. Express your answer to three significant figures and include appropriate units. c) Determine the direction of the electric field felt by electrons in the rod. Express your answer as either: up, right, down, or left.arrow_forwardA current of 22.0 mA is maintained in a single circular loop of 1.20 m circumference. A magnetic field of 0.300 T is directed parallel to the plane of the loop. (a) Calculate the magnetic moment of the loop. mA . m² (b) What is the magnitude of the torque exerted by the magnetic field on the loop? mN. m Need Help? Read It Watch Itarrow_forward2. A power line is suspended 10.0m above the ground and carries a current of 200 A. a. What is the strength of the associated magnetic field at ground level? b. How does this compare to the average ground level strength of Earth's magnetic field Bearth ≈ 3x10-5T? 3. Two power lines are separated by a distance of 3.00m. Each power line carries a current of 500A. The currents point in the same direction. What is the magnetic force between 10.0m segments of the two wires?arrow_forward
- The two wires shown in the figure below are separated by d = 10.7 cm and carry currents of I = 4.85 A in opposite directions. 1) Find the magnitude and direction of the net magnetic field at a point midway between the wires. 2) Find the magnitude and direction of the net magnetic field at point P1, 10.7 cm to the right of the wire on the right. 3) Find the magnitude and direction of the net magnetic field at point P2, 2d = 21.4 cm to the left of the wire on the left.arrow_forward6. A wire is formed so as to make a circular loop connecting two long, straight sections as shown in Figure 6. If the radius of the loop is R = 20 cm and the wire carries a current I = 2.4 A, what are the magnitude and direction of the magnetic field at the center of the loop? I If needed, you can use the magnetic field due to a straight wire, and and the magnetic field at the center of a loop derived from Ampere's law. (Hint: The two long sections form one long straight current- carrying wire.)arrow_forwardNeeds Complete typed solution with 100 % accuracy.arrow_forward
- 8. The US Navy is developing a railgun that uses magnetic field repulsion. The railgun can propel a 980 N projectile at seven times the speed of sound. How much energy is stored in this magnetic field? Assume a complete conversion of energy and a speed of sound of 340 m/s. A. 119 MJB. 283 MJC. 578 MJD. 2780 MJarrow_forward1a. What is the maximum force on an aluminum rod with a 0.450-µC charge that you pass between the poles of a 2.00-T permanent magnet at a speed of 2.00 m/s? 1b.In what direction is the force? - parallel to both the velocity and the magnetic field - parallel to the velocity and perpendicular to the magnetic field - perpendicular to the velocity and parallel to the magnetic field - perpendicular to both the velocity and the magnetic fieldarrow_forwardUCF PHY2054 Post Lab - Unit 07 Magnetic Fields Due to Currents 1. Consider a point 1.0 cm away from a long, straight wire. For each case below, give the current that is needed to generate listed magnetic field strength. a. Surface of the Earth- 5X10T b. Refrigerator magnet- 5x10 T c. Laboratory magnet- 0.1 to 1 T d. Superconducting magnet- 10 Tarrow_forward
- The diagram below shows two concentric, conducting, circular loops with currents traveling in opposite directions. If the current in the outer loop is I2 = 90.0 μA, what must be the magnitude of the current in the inner loop so that the total magnetic field at the center, C, of both loops is zero? a. 60.0 μA b. 45.0 μA c. 90.0 μA d. 75.0 μA e. 105 μAarrow_forward4G OA 1:0Y A long straight wire is bent as shown to form two parallel straight wires and a semicircle (radius = 2.0 m). A current of 24 A is directed as shown. What is the magnitude of the magnetic field ( in units of uT) at point C, the center of the circle along which the semicircle lies? c'arrow_forwardForce on a Wire: The magnetic force on a current-carrying wire in a magnetic field is the strongest when Group of answer choices A. the current is at a 180° angle with respect to the magnetic field lines. B. the current is perpendicular to the magnetic field lines. C. the current is in the direction opposite to the magnetic field lines. D. the current is at a 0° angle with respect to the magnetic field lines. E. the current is in the direction of the magnetic field lines.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- College PhysicsPhysicsISBN:9781305952300Author:Raymond A. Serway, Chris VuillePublisher:Cengage Learning
University Physics (14th Edition)PhysicsISBN:9780133969290Author:Hugh D. Young, Roger A. FreedmanPublisher:PEARSON
Introduction To Quantum MechanicsPhysicsISBN:9781107189638Author:Griffiths, David J., Schroeter, Darrell F.Publisher:Cambridge University Press 
Physics for Scientists and EngineersPhysicsISBN:9781337553278Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
Lecture- Tutorials for Introductory AstronomyPhysicsISBN:9780321820464Author:Edward E. Prather, Tim P. Slater, Jeff P. Adams, Gina BrissendenPublisher:Addison-Wesley
College Physics: A Strategic Approach (4th Editio...PhysicsISBN:9780134609034Author:Randall D. Knight (Professor Emeritus), Brian Jones, Stuart FieldPublisher:PEARSON
College Physics
Physics
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Cengage Learning
University Physics (14th Edition)
Physics
ISBN:9780133969290
Author:Hugh D. Young, Roger A. Freedman
Publisher:PEARSON
Introduction To Quantum Mechanics
Physics
ISBN:9781107189638
Author:Griffiths, David J., Schroeter, Darrell F.
Publisher:Cambridge University Press
Physics for Scientists and Engineers
Physics
ISBN:9781337553278
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
Lecture- Tutorials for Introductory Astronomy
Physics
ISBN:9780321820464
Author:Edward E. Prather, Tim P. Slater, Jeff P. Adams, Gina Brissenden
Publisher:Addison-Wesley
College Physics: A Strategic Approach (4th Editio...
Physics
ISBN:9780134609034
Author:Randall D. Knight (Professor Emeritus), Brian Jones, Stuart Field
Publisher:PEARSON