Question

PreLab 3 Magnetic Fields Name: Lab Section: Lab Date: /_ / Name of PHY 109 Lab Instructor: Instructions: Prepare for this lab activity by answering the questions below. Note that this is a Prelab.lt must be turned in at the start of the lab period. Time cannot be given during the lo stivity for Prelab work. After the start of lab activities, PreLabs cannot be accepted Before beginning this assignment, you should review the topic of magnetic fields in your textbook. Please note that there may be more than one correct answer. Please circle the letters of all that apply. 1 Which of the following statements regarding magnetic fields isare true? a) Magnetic field lines start on north poles and end on south poles b) Like magnetic poles attract each other and unlike magnetie poles repel each other. c) The force that a magnetic field exerts on a charged particle is perpendicular to both the direction of the magnetic field and the velocity of the particle d) Magnetic poles ALWAYS come as a pairie, you will never find an isolated monopole. e) A static (constant) magnetic field does not do any work on a moving charge. 2. Consider a current-carrying circular loop or coil of wire. Which of the following are true. a) The magnetic field at the center of the loop is zero. b) The magnetic field on the axis of the loop is parallel to the axis c) Far from the center loop, the magnetic field is similar to a dipole magnetic field d) The strength of the magnetic field is proportional to the number of turns of wire in the coil. e) The strength of the magnetic field is proportional to the current in the loop. 3. Consider an ideal solenoid with length L. radius R, and total number of turns N. Which of the following are true? Hint: it is very helpful to read the section in your textbook on solenoids. a) The magnetic field inside of the solenoid is a constant and points along the axis of the solenoid. b) The magnetic field outside of the solenoid is zero. c) The magnetic field inside of the solenoid is constant and points perpendicular to the axis of the solenoid. d) If we double the length of the solenoid while keeping the total number of turns and the radius constant, the magnetic field inside the solenoid will not change, e) If we double the radius of the solenoid while keeping the total number of turns and the length constant, magnetic field inside the solenoid will not change,

Answer 1

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