Static Electricity

Electric charge (Q)
1. Excess or deficiency of electrons
2. Coulomb (C)
3. Like charges repel each other
4. Unlike charges attract each other
5. Gold leaf electroscope
Electrification
1. By contact
  1. Polythene
    1. Negative
  2. Perspex
    1. Positive
2. Conductor
  1. Any substance through which electric charge can flow
3. Insulator
  1. Any substance through which electric charge can't flow
4. By induction
Point discharge
1. All static charges reside on the outside of a conductor
  1. Accumulates where the conductor is most pointed
2. Ions in the air are either strongly attracted or repelled from the tip of a charged conductor and move towards or away from it
3. Demonstrated using a Van de Graaf generator
Coulomb's Law
1. Electrostatic force between two point charges
  1. Proportional to the product of their charges
  2. Inversely proportional to the square of the distance between the charges
Electric fields
1. The region of space in which electric charges at rest experience an electrostatic force
2. Electric field lines
  1. Line along which a positive charge would move if placed in the electric field
3. Electric field strength
  1. Force per unit positive charge at a point in an electric field
  2. Newton per coulomb

Resource summary

	Created by alex.examtime9373 over 10 years ago

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