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3. Current Electricity

Section outline

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  Drift of electrons and the origin of resistivity
  
  Select activity Drift velocity (concept & intuition)
  
  
  
  Drift velocity (concept & intuition) Lesson
  
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  Select activity Drift velocity - formula & derivation
  
  
  
  Drift velocity - formula & derivation Lesson
  
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  Select activity Current from drift velocity (I = neAvd)
  
  
  
  Current from drift velocity (I = neAvd) Lesson
  
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  Select activity Ohm's law - derivation (using drift velocity)
  
  
  
  Ohm's law - derivation (using drift velocity) Lesson
  
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  Ohm’s law
  
  Select activity Introduction to circuits and Ohm's law
  
  
  
  Introduction to circuits and Ohm's law Lesson
  
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  Select activity Solved example: Ohms law
  
  
  
  Solved example: Ohms law Lesson
  
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  Select activity Ohm's law graph (verifying Ohm's law)
  
  
  
  Ohm's law graph (verifying Ohm's law) Lesson
  
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  Select activity Solved example: (Ohm's law graph)
  
  
  
  Solved example: (Ohm's law graph) Lesson
  
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  Resistivity of various materials
  
  Select activity Resistivity and conductivity
  
  Resistivity and conductivity Lesson
  
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  Select activity Solved example - Calculating power & heat dissipated
  
  Solved example - Calculating power & heat dissipated Lesson
  
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  Electrical energy, power
  
  Select activity Electric power
  
  Electric power Lesson
  
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  Select activity Solved example: Power dissipated in bulbs
  
  Solved example: Power dissipated in bulbs Lesson
  
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  Cells, emf, internal resistance
  
  Select activity Cells, EMF, terminal voltage & internal resistance
  
  Cells, EMF, terminal voltage & internal resistance Lesson
  
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  Select activity Cells with internal resistances: Worked example
  
  Cells with internal resistances: Worked example Lesson
  
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  Cells in series and in parallel
  
  Select activity Cells in series
  
  Cells in series Lesson
  
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  Select activity Cells connected in parallel
  
  Cells connected in parallel Lesson
  
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  Kirchhoff’s Law
  
  Select activity Kirchhoff's current law | Circuit analysis
  
  
  
  Kirchhoff's current law | Circuit analysis Lesson
  
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  Select activity Kirchhoff's law application: 2-loop circuit solving
  
  
  
  Kirchhoff's law application: 2-loop circuit solving Lesson
  
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  Select activity Kirchhoff's voltage law (conceptual)
  
  
  
  Kirchhoff's voltage law (conceptual) Lesson
  
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  Wheatstone bridge
  
  Select activity Wheatstone bridge & its logic
  
  Wheatstone bridge & its logic Lesson
  
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  Select activity Meter bridge principle (and working)
  
  Meter bridge principle (and working) Lesson
  
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