Calculating Energy Transfer by componets

• What is the relationship between charge flow and energy transferred in a circuit?

  Charge flow causes energy to be transferred
• How do you calculate total charge flowing in a circuit?

  Charge = Current × Time
• If a circuit has a current of 0.3 amps for 10 seconds, what is the total charge?

  3 coulombs
• What is the equation for calculating energy transferred?

  Energy = Charge × Potential difference
• What units are used for energy transferred?

  Joules
• If 4 coulombs of charge flows at a potential difference of 15 volts, what is the energy transferred?

  60 joules
• What must you calculate first to find energy transferred by a resistor?

  The potential difference across the resistor
• If resistor B has a potential difference of 25 volts and the total potential difference is 30 volts, what is the potential difference across resistor A?

  5 volts
• How do you calculate the energy transferred by resistor A if 3 coulombs of charge flows through it?

  Multiply charge by potential difference
• What is the energy transferred by resistor A with a potential difference of 5 volts and 3 coulombs of charge?

  15 joules
• What is the formula for calculating total charge in a circuit?

  • Charge (C) = Current (A) × Time (s)
• What is the formula for calculating energy transferred in a circuit?

  • Energy (J) = Charge (C) × Potential Difference (V)
• How do you find the potential difference across components in series?

  • Total potential difference is shared
  • Subtract known voltages from total