charge

• when a potential difference is applied the electrons have the push they need to move
• electrons flow from the negative terminal to the positive terminal of a circuit
• current moves in the opposite direction to the flow of electrons motive to negative
• current = charge / time
• Kirchhoff's first law

  • the total current entering a junction is equal to the total current leaving a junction
  • the same amount of current that leaves the cell must arrive back at the cell