rd 3 FORM INDUSTRIAL ARTS ELECTRICAL AND ELECTRONICS CONTENT OUTLINE 1. INTRODUCTION TO ELECTRICITY 2. GENERAL HEALTH AND SAFETY EXPECTED OUTCOME AND SKILLS Give the correct definition of electricity Identify and explain the different careers in Electricity Outline correctly roles of personnel in the electrical engineering profession SUGGESTED ACTIVITIES Research on the origins of electricity and how it can be harnessed. Correctly define the term safety Identify correctly the different categories of safety 1. Personal safety 2. Shop safety 3. Machine safety 4. Tools safety Properly identify general electrical safety rules and warning signs Demonstrate proper safety precautions Demonstrate proper first aid procedures EVALUATION Mounting of a display on safety and hygiene Research and make presentation on safety at the work place Survey on safety practices in the home, school and community Rating of display Grading of research and presentation Evaluation of survey 3. ATOMS, ELECTRONS AND ELECTRIC CHARGES Make proper accident reports Correctly identify the different safety hazards List and explain correctly, the purpose of safety color coding Properly explain the terms matter and energy Explain correctly the structure of an atom a. Valence electrons b. Energy levels of electrons and free electrons Identify correctly the characteristics of the following Electric Charges a. Ions b. Coulomb c. Charges in action Explain correctly, the theory of static electricity Draw and label parts of an atom Atoms and matter crossword puzzle 4. ELECTRIC CIRCUITS AND DEVICE 5. CONDUCTROS AND INSULATORS Correctly identify the parts of a circuit a. Energy source b. Conductors c. Control devices d. Protective devices e. Loads List and explain the various electrical symbols Explain correctly the terms Voltage and Current Explain the terms direct currents and alternating currents State the principles of using direct and alternating current Properly explain the term resistance Give the correct definition of a conductor. Explain the formation of conductors. List and explain correctly, the different types of Mounting of a display on charts that show the various parts of a circuit Research and make presentation on the use/purpose of the various parts of a circuit. Compile a list of electrical symbols used when applying real life situations. Preparation of display board showing the application of several conductors and insulators. Rating of display Grading of research and presentation Evaluation of survey Rating of display board 6. OHM’S LAW AND POWER FOMULA conductors. Give the correct definition of an insulator. List and explain the properties of insulators. List and explain correctly, the different types of Conductors Explain correctly, the theory of Ohm’s Law Demonstrate a unique understanding of the Ohm’s law formula Demonstrate proper use of the Ohm’s law formula Explain correctly the concept of electric power and energy Demonstrate and appreciation for the power formula Properly use the power formulae Demonstrate and appreciation for the energy formula Properly use the energy Analyze the behaviour of an object that has been charged to determine whether the object is made of a conductive or a nonconductive material. Apply the principles of Ohm’s Law to solve for unknowns of resistance, current or voltage. Apply the use of the magic V I R-triangle to calculate all forms of Ohm’s law formula 7. SERIES CIRCUIT 8.ELECTRICAL CIRCUITS IN APPLICATION (PRACTICAL) Identify a typical series circuit Explain the concept of series resistance Calculate series voltage Calculate series current Basic electrical circuit design (series) Analyze a series circuit and determine the values of the current at and electric potential difference across each of the resistors in a series circuit.