potential difference from batteries

• What is the potential difference produced by a single cell mentioned in the video?

  9 volts
• 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
• What happens to the potential difference when two cells are connected in series?

  It adds up to give total potential difference
• If two cells each have a potential difference of 9 volts, what is the total potential difference when connected in series?

  18 volts
• How do you calculate the overall potential difference of three cells each with 9 volts?

  Multiply 9 by 3
• What is the potential difference when one cell is connected in the wrong direction?

  It cancels out, resulting in 0 volts
• If two cells are pointing in the correct direction and one is in the wrong direction, what is the overall potential difference?

  9 volts
• What are the key points to remember about batteries and potential difference?

  • A battery consists of two or more cells.
  • Cells must be connected in the same direction.
  • Potential difference adds up in series.
  • Incorrectly oriented cells can cancel potential difference.
• What is the overall potential difference of a battery with three cells, two in the correct direction and one in the wrong direction?

  9 volts