UNIT 13. MAGNETISM

At the end of this unit the student should be able to:

- Describe the magnetic fields created by magnets

- Calculate the magnetic force exerted on a moving charge and

  determine the direction of the magnetic field, the velocity of the

  charge and the magnetic force by using a right-hand rule

- Calculate the magnetic force on a current carrying wire (or loop of

  wire) and determine the direction of the magnetic field, the current

  and the magnetic force by using a right-hand rule

- Calculate the magnetic force on a long, straight wire and determine

  the direction of the magnetic field, the current and the magnetic force

  by using a right-hand rule

- Determine the magnitude and direction of the magnetic force

  between two parallel wires

- Describe Faraday’s experiments that led to the conclusion that a

  changing magnetic field induces an emf

- State Faraday’s law of induction and Lenz’s law

- Demonstrate proficiency in solving problems involving an induced

  emf in cases where the magnetic flux density changes and in cases

  where the area of a loop of wire is changed

- Apply Lenz's law to determine the direction of the induced current in

  a variety of situations including motional emf