Electricity

4.2.1 Current, Potential Difference and Resistance

• 4.2.1.1 Standard circuit diagram symbols
• 4.2.1.2 Electrical charge and current
• 4.2.1.3 Current, resistance and potential difference
• 4.2.1.4 Resistors 3 notes
  • Ohmic and Non-Ohmic Circuit Elements
  • Sensing Components: Lamps, Diodes, Thermistors and LDRs
  • Practical: Investigating I-V Characteristics

• Series and parallel circuits

4.2.3 Domestic Electricity and Safety

• 4.2.3.1 Direct and alternating potential difference
• 4.2.3.2 Mains electricity

4.2.4 Circuit Energy Transfers

• 4.2.4.1 Power
• 4.2.4.2 Energy transfers in everyday appliances
• 4.2.4.3 The National Grid

4.2.5 Static Electricity

• 4.2.5.1 Static charge
• 4.2.5.2 Electric fields