5.1.2 Defining potential difference

• What is potential difference analogous to in water flow?

  Height difference
• In circuits, what does work done refer to?

  Energy needed to move a charge from lower to higher voltage
• How is potential difference analogous to water flow?

  It is like height difference causing flow
• What is the unit of potential difference?

  Volt (V)
• What is the formula that relates voltage, work done, and charge?

  $V =$$\frac{W}{Q}$
• If moving 1 coulomb requires a certain amount of work, how much work is needed to move 2 coulombs at the same voltage?

  Twice the work required for 1 coulomb
• What does potential difference tell us about electrical energy?

  It shows energy gained or lost per coulomb
• What does a larger work done indicate in the formula $V =$$\frac{W}{Q}$?


  Greater potential difference needed to move a charge
• What does the formula $V =$$\frac{W}{Q}$ indicate about voltage?


  Voltage equals work done divided by charge
• What is the relationship between voltage and electrical current?

  • Higher voltage means more energy per coulomb
  • Allows stronger electrical currents to flow
• What does the formula $V =$$\frac{W}{Q}$ represent?


  Potential difference equals work done divided by charge
• What does a higher potential difference indicate about electrical energy?

  More energy gained or lost by charge
• What does the formula $V =$$\frac{W}{Q}$ represent?


  Energy per coulomb of charge moving
• What does potential difference tell us about energy in a circuit?

  It indicates energy gained or lost per unit charge
• What does potential difference ($V$) measure in electricity?


  Electrical energy gained or lost by charge
• What is the definition of charge?

  Electricity a substance carries
• If a battery provides 12V, how much energy does it give per coulomb?

  12 joules of energy
• In the equation $V =$$\frac{W}{Q}$, what does $Q$ represent?


  The number of coulombs being moved
• What is the significance of the formula $V =$$\frac{W}{Q}$ in electrical circuits?


  • Defines potential difference
  • Relates voltage to work and charge
  • Indicates energy change per coulomb
• What does potential difference measure?

  Electrical energy gained or lost by charge
• If 3 coulombs move and 6 joules of work is done, what is the potential difference?

  2 V
• If 10 joules of work is done on 2 coulombs of charge, what is the potential difference?

  $5 \text{ V}$
• How does the potential difference change if the work done increases while the charge remains constant?

  Potential difference increases with more work done
• What is the unit of charge mentioned in the context of potential difference?

  Coulomb
• What happens to potential difference if the charge increases while work done remains constant?

  Potential difference decreases with more charge
• How does the formula $V =$$\frac{W}{Q}$ connect electrical energy to charge and voltage?


  It relates work done to charge movement and voltage
• What does work done represent in relation to electric fields?

  Energy required to push a charge against an electric field
• What are the charges of protons and electrons?

  Protons are positive, electrons are negative
• What does $W$ represent in physics?


  Work done
• What is the definition of work done ($W$)?


  Energy transferred when a charge moves through a potential difference
• How is one volt defined in terms of work and charge?

  One joule per coulomb of charge
• How is potential difference related to coulombs of charge?

  It indicates energy per coulomb of charge
• Why is potential difference important in electrical circuits?

  It determines how much energy charges can transfer
• What is the formula for potential difference?

  $V =$$\frac{W}{Q}$
• How does the amount of charge affect the work done in moving it?

  More charge means more work is needed
• How is work done similar to lifting a weight?

  Both require energy to move to a higher position