into to ciruits

• What are circuits primarily composed of?

  Power source and conductive path
• What is the purpose of a circuit diagram?

  To represent electrical circuits visually
• What is the symbol for a cell in a circuit diagram?

  A simple version of a battery
• How is a battery represented in circuit diagrams?

  Two cell symbols combined
• What does the filament lamp symbol represent?

  A small light bulb
• What happens when a switch in a circuit is closed?

  Current continues to flow
• What is current denoted by in electrical terms?

  The letter i
• How is current measured?

  In amperes, or amps
• What does potential difference represent in a circuit?

  The force driving electron flow
• What is another name for potential difference?

  Voltage
• How is potential difference measured?

  In volts
• What does resistance do in a circuit?

  Opposes the flow of electrons
• How is resistance measured?

  In ohms
• Which way do electrons flow in a circuit?

  From negative terminal to positive terminal
• What does the longer line on a cell represent?

  The positive terminal
• What is conventional current?

  Current flowing from positive to negative
• What is the main takeaway regarding current flow for exams?

  Current flows from positive to negative