Charge in Circuits

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

  The charge flow in a circuit
• Why is it important to learn about charge flow in circuits?

  Because it is a fundamental concept in understanding electric current
• What is electrical charge measured in?

  Coulombs
• What is the symbol for electrical charge?

  Capital C
• What does a current of 1 ampere represent?

  1 Coulomb of charge flowing per second
• How is the size of electric current defined?

  As the rate of flow of electrical charge
• What is the equation to calculate charge flow in a circuit?

  Charge flow in coulombs = current in amperes × time in seconds
• If the current is 0.3 amperes and the time is 20 seconds, what is the charge flow?

  6 coulombs
• Will the equation for charge flow be provided in the exam?

  No, you will need to learn it
• How do you calculate the current if 360 coulombs of charge flows in 400 seconds?

  By rearranging the equation to current = charge flow / time
• What is the current when 360 coulombs of charge flows in 400 seconds?

  0.9 amperes
• What is the process to calculate charge flow in a circuit?

  • Use the equation: Charge flow (C) = Current (A) × Time (s)
  • Rearrange if necessary to find current or time
• What are the steps to calculate current from charge flow and time?

  1. Start with the equation: Charge flow = Current × Time
  2. Rearrange to: Current = Charge flow / Time
  3. Substitute the values to find the current