University:
Ontario Tech University
Course:
PHY 1010 | Physics I
Academic year:

2024
Views:

391

Pages:

5
Author:

customer-8295992

Fields Assignment 3 - Magnetic Fields 1. Figure 1 shows a bar magnet surrounded by iron filings. Label the direction of the field lines 2. Figure 2 shows a horseshoe magnet. Label the direction of the field lines. 3. A compass needle placed on a level surface points to the letter N. What does this tell the compass reader? 4. An electric cord from a lamp is placed near a compass. Explain what happens to the compass when the lamp is turned on. 5. Which solenoid in Figure 3 has a stronger magnetic field? 6. A current of 10.0 A flows through a wire at a 30.0o angle to the direction of a 0.300 T magnetic field. Determine the magnetic force on a 5.00 m length of that wire. 7. A charged particle is moving through a velocity selector (a region in which the electric field is perpendicular to the magnetic field, with both fields perpendicular to the initial velocity of the particle) (Figure 6). Consider a case with an electric field strength of 510 V/m and a magnetic field strength of 0.025 T. a. Calculate the speed selected for protons. b. Calculate the speed selected for Ca+2 ions. c. Describe the change necessary to Figure 6 if you were to use your selector to select all incoming F- ions with speeds less than a selected value. Fields Assignment 3 - Magnetic Fields 8. In Figure 8, a wire is shown to carry a conventional current in three different directions. Determine the direction of the magnetic field that will produce the magnetic force in each case. 9. The magnetic field in Figure 9 has a magnitude of 3.0 T. Determine the magnetic force experienced by a. an electron at rest b. an electron moving upward at 2.0 m/s c. an electron moving to the left at 2.0 m/s 10.An electron moves with a speed of 6.9x103 m/s in a direction perpendicular to a magnetic field directed south to north and of strength 1.3 x10-2 T. What is the magnitude and direction of the force on the electron if the electron is moving from east to west? 11.A straight wire of length 0.65 m carries a current of I = 1.7 A. The strength of the magnetic field in the region is 1.6 T. If the force on the wire is 1.1 N, determine the angle between the field and the wire. 12.In Figure 12, a length of wire is strung between the poles of a magnet. The magnetic field is designated by the orange crosses. a. In which direction is the magnetic field moving? b. In which direction must the current be moving to cause the deflection of the wire shown in each diagram? Fields Assignment 3 - Magnetic Fields Fields Assignment 3 - Magnetic Fields Fields Assignment 3 - Magnetic Fields