Electricity

• Charge


  Value for electricity flowing through a component
• Current


  Flow of electrons
• Potential difference


  Pushes current around
• Resistance


  Slows down the current
• Front


  • Resistance
  • Charge
  • Current
  • Time
• Potential difference


  • Amps
  • Ohms
  • Coulombs
  • Seconds
• Voltage at battery is split across components
• Current moves in the same direction everywhere and has the same current
• Total potential difference split across components
• Total resistance is all resistors added together
• Decreasing resistance


  Increases the current
• Components


  • Lamp
  • LED light
• Lamp and LED light can be added to a circuit to check for a current as they will only light up if a current is present
• Current


  Speed of charge moving in a circuit, measured in ammeters
• Faster the charge moves, higher the current
• Electricity


  Stream of negatively charged particles (electrons)
• When connecting a battery to a wire, it gives these electrons energy
• The movement of electrons is a current
• At a junction where wires come together or split apart, the current is conserved because what goes in must come out
• If electrons enter a junction, the same amount must leave to ensure charge conservation
• Voltage


  Energy given to each charge as it moves through a circuit, measured as the energy transferred per charge passed
• The energy sources are shared/divided among the charges
• Charges are given lots of energy, like a volt
• Energy transferred


  Charge x Voltage
• Component


  A part of a larger system or device that performs a specific function. Can be made up of one or more elements.