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Energy and change

Natural Sciences

After this lesson, you should be able to:

  • Explain why conductors heat up in terms of their resistance
  • Explain how resistance affects the current in the circuit
  • State the role of resistors in circuits
  • List uses of resistance found in different appliances in terms of energy transfer
  • Represent resistors and rheostats using conventional symbols
  • Compare incandescent bulbs with LEDs


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