Electronics

• The purpose of the power supply is to convert AC voltage into DC voltage.
• LED

  light-emitting diode
• resistors are used to limit the current flowing through a circuit and to limit the voltage across a component
• breadboards are used as a temporary prototype, to test circuits and components
• series circuit


  • current is the same in all branches
  • total resistance is the sum of the individual resistances
  • voltage is the sum of the individual voltages of the components
• parallel circuit

  • current is split between the branches
  • voltage is the same throughout the circuit
• in a series circuit, if one bulb burns out or breaks, it will affect the other bulbs as well, as the current can no longer flow through it.
• in a parallel circuit, if one bulb burns out or breaks, only that bulb will be affected, as the current can still flow through the other branches
• horizontal rails on a breadboard are used to supply power to the circuit#
• voltage


  the power source of a circuit. it provides a potential difference, which causing an electric current
• current


  the flow of electrons around a circuit from the negative to positive terminal of a cell.
• resistance


  the opposition to current flow in an electrical circuit.