Potential difference from Batteries

• What should you be able to describe by the end of the video?

  What's meant by a battery
• What is the potential difference produced by a single cell mentioned in the video?

  9 volts
• How does the potential difference change when two cells are connected in series?

  It adds up to give a total
• What is the symbol used for a cell in physics?

  A single vertical line
• What is a battery defined as in the video?

  Two or more cells connected together
• What direction must the cells in a battery be connected?

  In the same direction
• If two cells each have a potential difference of 9 volts, what is the total potential difference when connected in series?

  18 volts
• What is the overall potential difference of a battery with three cells, each having a potential difference of 9 volts?

  27 volts
• What happens to the potential difference if one cell is connected in the wrong direction?

  It cancels out the other cell's voltage
• If a battery has two cells pointing correctly and one cell pointing incorrectly, what is the overall potential difference?

  9 volts
• What are the steps to calculate the potential difference of a battery?

  • Identify the number of cells
  • Check the direction of each cell
  • Add potential differences of cells in the same direction
  • Subtract potential differences of cells in the opposite direction
• Where can you find more questions on determining potential difference of batteries?

  In the vision workbook
• What is the potential difference measured across a battery with one cell pointing correctly and one incorrectly?

  0 volts
• How does the arrangement of cells affect the total potential difference in a battery?

  Correct arrangement adds voltage, incorrect cancels
• If you have three cells with 9 volts each, how would you calculate the total potential difference?

  Multiply 9 by 3