Revision guides: Electricity

Revision guides: Electricity
- Revise: Electrical charge carriers
  Electrical current is electrical charge transferred in a particular time. These three properties can be calculated using the equation Q=It. Current can be a.c. or d.c.
- Revise: Potential differences (voltage)
  The potential difference (or voltage) of a supply is a measure of the energy given to the charge carriers in a circuit.
- Revise: Ohm's Law
  Ohm’s law relates the resistance of a component to its voltage and current. Applying circuit rules for current and voltage with Ohm’s Law allows us to formulate rules to determine total resistance.
- Revise: Practical electrical and electronic circuits
  Measurement and analysis of current and voltage in simple circuits allows us to formulate rules and predict unknown values.
- Revise: Electrical power
  Power is a measure of the rate of energy transfer and relates to the current and voltage for an electrical circuit.
Video playlist
- Video: Conductors and insulators. Video
  Why does a metal wire conduct electricity while the plastic sheath does not?
- Video: Electrical charge carriers and electric fields. Video
  Explaining how current is created and the difference between AC and DC
- Video: Energy sources. Video
  Understand how energy sources supply electrical energy to circuits
- Video: Ohm's Law. Video
  Understanding the relationship between voltage, current and resistance in a circuit.
- Video: Conductors. Video
  Conductors such as wires and resistors are used so current can flow in a complete circuit.
- Video: Electrical power. Video
  Electrical charge carriers and electric fields

Video playlist

Links