PHYSICS Preliminary Electrical Energy Model  More Resources 

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Year 11 Physics Model Home Preliminary Physics, Assessment Task 3 Electrical Energy in the Home Physics Assessment 3 Due: 13 August 07 (T3W5) Weighting: 20% Construction Task Perform an investigation and construct a model of a household electrical circuit using such electrical components as: • • • • • • • • • Conductors Switches Lights Power outlets Stove Hot water system Electrical distribution board Safety devices Earth connection The model does not need to be a functioning electrical circuit. However, it should clearly demonstrate to another person how a house is wired and where and what safety devices are used. Size of model must be between A4 and A3. Research Task Carry out research to describe: 1. How a Circuit Breaker works. 2. What a Residual Current Device or Earth Leakage Detector is, and how it works. 3. What voltage and current supplies an average house receives. 4. The cost of electricity in your house and ways in which this cost could be reduced. RL 17/10/2008 Year 11 Physics Physics Assessment 3 Marking Guideline You can receive a total of 20 marks for this assessment. Maximum of 1 mark for each of the following: • • • • • • • Fuse-link Earth connection Safety devices Power circuit Lighting circuit Stove and HWS circuits Switch for each appliance or light [Supply to house from mains] [Distribution board] [Distribution board] [15 A] [8 A] [15 A] Maximum of 5 marks for the presentation of the model. Maximum of 2 marks for each research question. RL 17/10/2008 Year 11 Physics Physics Assessment 3 RL 17/10/2008