resistors in series and parallel

• What is the relationship between resistors in series?

  Resistors in series add together
• How do you calculate the current in a circuit with a 100 ohm resistor and a potential difference of 5 volts?

  Current = 5 volts / 100 ohms
• What is the total resistance of a 100 ohm resistor and a 50 ohm resistor in series?

  150 ohms
• Why do resistors add in series?

  Current passes through each resistor sequentially
• What is the equivalent resistance of a 100 ohm and a 50 ohm resistor in series?

  150 ohms
• How do you calculate the current in a circuit with a total resistance of 150 ohms and a potential difference of 20 volts?

  Current = 20 volts / 150 ohms
• What is the total resistance of a 20 ohm, 15 ohm, and 10 ohm resistor in series?

  45 ohms
• How do you calculate the current with a potential difference of 10 volts and a total resistance of 45 ohms?

  Current = 10 volts / 45 ohms
• What is the total resistance of a 200 ohm and a 75 ohm resistor in series?

  275 ohms
• How does the total resistance of resistors in parallel compare to the smallest individual resistor?

  Total resistance is less than the smallest resistor
• Why does total resistance decrease in parallel circuits?

  More pathways for current to flow
• What happens to the current in a parallel circuit compared to a series circuit?

  More total current flows in parallel
• What are the key facts about resistors in series?

  • Resistors add together
  • Current passes through each resistor sequentially
  • Equivalent resistance can replace multiple resistors
• What are the key facts about resistors in parallel?

  • Total resistance is less than the smallest resistor
  • More pathways for current to flow
  • Total current increases in parallel circuits