Ch.210.3 Flashcards
- Two charged particles are traveling in circular orbits with the same speed in a region of uniform magnetic field that is directed into the page, as shown. The magnitude of the charge on each particle is identical, but the signs of the charges are unequal.
Which one of the entries in the table below is correct?
Chart Answers
Mass Relationship: m1 > m2
Sign of charge Q1: -
Sign of charge Q2: +
A beam consisting of five types of ions labeled A, B, C, D, and E enters a region that contains a uniform magnetic field as shown in the figure below. The field is perpendicular to the plane of the paper, but its precise direction is not given. All ions in the beam travel with the same speed. The table below gives the masses and charges of the ions. Note: 1 mass unit = 1.67 × 10–27 kg and e = 1.6 × 10–19 C
- Which ion falls at position 2?
A) A B) ----- B (4 units +e) C) C D) D E) E
A beam consisting of five types of ions labeled A, B, C, D, and E enters a region that contains a uniform magnetic field as shown in the figure below. The field is perpendicular to the plane of the paper, but its precise direction is not given. All ions in the beam travel with the same speed. The table below gives the masses and charges of the ions. Note: 1 mass unit = 1.67 × 10–27 kg and e = 1.6 × 10–19 C
- What is the direction of the magnetic field?
A) toward the right B) toward the left C) ----- into the page D) out of the page of the page E) toward the bottom
A beam consisting of five types of ions labeled A, B, C, D, and E enters a region that contains a uniform magnetic field as shown in the figure below. The field is perpendicular to the plane of the paper, but its precise direction is not given. All ions in the beam travel with the same speed. The table below gives the masses and charges of the ions. Note: 1 mass unit = 1.67 × 10–27 kg and e = 1.6 × 10–19 C
- Determine the magnitude of the magnetic field if ion A travels in a semicircular path of radius 0.50 m at a speed of 5.0 × 106 m/s.
A) 1.0 T B) 0.84 T C) 0.42 T D) ----- 0.21 T E) 0.11 T
- A 0.0150-m wire oriented horizontally between the poles of an electromagnet carries a direct current of 9.5 A. The angle between the direction of the current and that of the magnetic field is 25.0° as shown. If the magnetic field strength is 0.845 T, what is the magnitude and direction of the magnetic force on the wire between the poles?
A) 1.17 N, upward B) 0.330 N, downward C) ----- 0.0509 N, upward D) 0.120 N, downward E) 0.495 N, upward
- A long, straight wire carries a 6.0-A current that is directed in the positive x direction. When a uniform magnetic field is applied perpendicular to a 3.0-m segment of the wire, the magnetic force on the segment is 0.36 N, directed in the negative y direction, as shown. What are the magnitude and direction of the magnetic field?
A) ----- 0.020 T, out of the paper B) 0.020 T, into the paper C) 0.060 T, out of the paper D) 0.060 T, into the paper E) 0.65 T, out of the paper
- A loop of wire with a weight of 0.55 N is oriented vertically and carries a current I = 2.25 A. A segment of the wire passes through a magnetic field directed into the plane of the page as shown. The net force on the wire is measured using a balance and found to be zero. What is the magnitude of the magnetic field?
A) zero tesla B) 0.51 T C) 0.84 T D) ----- 1.2 T E) 4.5 T
A long, straight, vertical segment of wire traverses a magnetic field of magnitude 2.0 T in the direction shown in the diagram. The length of the wire that lies in the magnetic field is 0.060 m. When the switch is closed, a current of 4.0 A flows through the wire from point P to point Q.
- Which one of the following statements concerning the effect of the magnetic force on the wire is true?
A) The wire will be pushed to the left.
B) The wire will be pushed to the right.
C) The wire will have no net force acting on it.
D) —– The wire will be pushed downward, into the plane of the paper.
E) The wire will be pushed upward, out of the plane of the paper.
A long, straight, vertical segment of wire traverses a magnetic field of magnitude 2.0 T in the direction shown in the diagram. The length of the wire that lies in the magnetic field is 0.060 m. When the switch is closed, a current of 4.0 A flows through the wire from point P to point Q.
- What is the magnitude of the magnetic force acting on the wire?
A) 0.12 N B) 0.24 N C) ----- 0.48 N D) 67 N E) zero newtons
- A current-carrying, rectangular coil of wire is placed in a magnetic field. The magnitude of the torque on the coil is not dependent upon which one of the following quantities?
A) the magnitude of the current in the loop
B) —– the direction of the current in the loop
C) the length of the sides of the loop
D) the area of the loop
E) the orientation of the loop
