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Transcript
High voltage Watch the ‘Electric Graffiti’ video What hazards did you see in the film? What is a transformer (with diagram)? Explain what happens in a step-up transformer with reference to voltage and current Why would the electricity company want to transmit electricity at high voltage? What are the safety implications of high voltage? Draw a diagram to show how the National Grid carries electricity from the power station to your home. Include the following and mention the voltage at each stage. • • • • • Power station Step-up transformer Pylons Step-down transformer Consumer How will electricity be used in circuits in the home? Using these common symbols, draw simple circuits showing how electricity would be used in: • A lamp • A motor M Plenary Wires on a pylon are often made of aluminium. Why is copper not used when it is a better conductor of electricity?
