Examine magnetic properties of a circuit or component.

Examination should include

• defining
• magnetic field
• induced current polarity
• lines of flux
• left-hand rule
• oersted, gilbert, maxwell, gauss, and Lenz units of magnetism
  
  
• using the left-hand rule to determine the direction of induced current for generators
• explaining principles of electromagnetism
• explaining principles and operation of the d'Arsonval meter movement
• using the right-hand rule to determine the direction of induced current for motors
• explaining magnetic operation of relay.

Process/Skill Questions:

• What effects would magnetic field reversal have on your life?
• What makes electromagnetic interference (EMI) a concern for technicians?
• Why is it important to understand the left-hand rule of current?