P4b Electrostatics 2: Uses of Electrostatics

  • Specification
  • Lesson Plans
  • Questions
  • Resources
  • Extras
FOUNDATION
ONLY on Foundation Tier

Recognise and describe how static electricity can be useful:

  1. restarting a heart when it has stopped (defibrillator);
  2. photocopiers/laser printers (detailed structural knowledge not required);
  3. removing dust from smoke in chimneys;
  4. paint spraying.
STANDARD
BOTH Foundation and Higher Tiers

Describe how static electricity can be useful for restarting the heart when it has stopped (defibrillator):

  1. paddles charged;
  2. good electrical contact with patient’s chest;
  3. charge passed through patient to make heart contract;
  4. care taken not to shock operator.

Describe how static electricity can be useful for electrostatic dust precipitators to remove smoke particles etc from chimneys:

  1. metal plates/grids put into chimneys;
  2. connected to a high PD;
  3. dust particles attracted to plate/grid;
  4. dust attracts together to form larger particles;
  5. dust falls back down chimney when particles are heavy enough.

Describe how static electricity can be useful for paint spraying:

  1. spray gun charged;
  2. paint particles charged;
  3. repel giving fine spray;
  4. object charged oppositely to paint;
  5. attracts paint;
  6. even coat, less waste, shadows painted.
HIGHER
ONLY on Higher Tier

Explain how static electricity can be useful for restarting the heart when it has stopped (defibrillator):

  1. paddles charged;
  2. good electrical contact with patient’s chest;
  3. charge passed through patient to make heart contract;
  4. care taken not to shock operator.

Explain how static electricity can be useful in electrostatic dust precipitators to remove smoke particles etc from chimneys:

  1. metal plates/grids put into chimneys;
  2. connected to a high PD;
  3. dust particles attracted to plate/grid;
  4. dust particles are attracted together to form larger particles;
  5. dust falls back down chimney when particles are heavy enough.

      6. Explain how static electricity can be useful for paint spraying:

      1. spray gun charged;
      2. paint particles charged;
      3. repel giving fine spray;
      4. object charged oppositely to paint;
      5. attracts paint;
      6. even coat, less waste, shadows painted.

       

 


Lesson 1

Objectives:


stuff what is important goes hereContent 3Content 4Content 5Content 2

Prior Learning:




Difficult Concepts:




Outline:




Suggested Practicals:




Extension Activities:




Homework:


Homework1

Lesson 2

Objectives:


Content 1

Prior Learning:




Difficult Concepts:




Outline:




Suggested Practicals:




Extension Activities:




Homework:


Homework2 again

 


Content 3
Content 4
Content 5

 


(c) David Perks 2010