Question

1. The smallest unit of magnetism is a dipole. North and South poles do not exist as separate units: True or False 2. How do you take cross product between two vectors? What is the magnitude and direction of the result of the cross product? 3. Formula for the magnetic force on a charge moving in a magnetic field. What does the force depend on? When is it zero? When is it maximum? 4. What is the trajectory traced by charged particles in a magnetic field? Write the expression for the radius of the orbit, period of revolution, frequency, and angular frequency of rotation. 5. Describe the principle of mass spectrometer. 6. Describe the principle of the velocity selector. 7. Write the formula for the force on the current carrying wire in a magnetic field. What does the force depend on? When is it zero? When is it maximum? 8. Write the formula for the torque on a current-carrying loop in an external magnetic field. What does torque depend on? When is it zero? When is it maximum? 9. Write the formula for the magnetic field produced by a long, straight current-carrying wire. Describe how the field lines and field vectors look. 10. Write the formula for the magnetic field produced by a coil of wire (solenoid). Describe how the field lines and field vectors look. 11. Describe how the field lines and field vectors for a single current-carrying loop. 12. Write the formula for the forces between two current-carrying wires. When are the forces repulsive and when are they attractive?

1. The smallest unit of magnetism is a dipole. North and South poles do not exist as separate units: True or False
2. How do you take cross product between two vectors? What is the magnitude and direction of the result of the
cross product?
3. Formula for the magnetic force on a charge moving in a magnetic field. What does the force depend on? When
is it zero? When is it maximum?
4. What is the trajectory traced by charged particles in a magnetic field? Write the expression for the radius of the
orbit, period of revolution, frequency, and angular frequency of rotation.
5. Describe the principle of mass spectrometer.
6. Describe the principle of the velocity selector.
7. Write the formula for the force on the current carrying wire in a magnetic field. What does the force depend on?
When is it zero? When is it maximum?
8. Write the formula for the torque on a current-carrying loop in an external magnetic field. What does torque
depend on? When is it zero? When is it maximum?
9. Write the formula for the magnetic field produced by a long, straight current-carrying wire. Describe how the
field lines and field vectors look.
10. Write the formula for the magnetic field produced by a coil of wire (solenoid). Describe how the field lines and
field vectors look.
11. Describe how the field lines and field vectors for a single current-carrying loop.
12. Write the formula for the forces between two current-carrying wires. When are the forces repulsive and when
are they attractive?

Added by Jennifer P.

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