Energy transfers exam tips

Exam tips

• Power exam tip 1

  Use precise subject-specific vocabulary when you explain how to explain that power transfer in a circuit device is related to potential difference across it and current through it..

  This keeps your answer tightly aligned to the approved learning objective for Power.

• Power exam tip 1

  Use precise subject-specific vocabulary when you explain how to explain that power transfer is related to energy changes over time..

  This keeps your answer tightly aligned to the approved learning objective for Power.

• Power exam tip 1

  Use precise subject-specific vocabulary when you explain how to recall and apply the equation P = V x I..

  This keeps your answer tightly aligned to the approved learning objective for Power.

• Power exam tip 1

  Use precise subject-specific vocabulary when you explain how to recall and apply the equation P = I^2 x R..

  This keeps your answer tightly aligned to the approved learning objective for Power.

• Power exam tip 1

  Use precise subject-specific vocabulary when you explain how to identify power P in watts, potential difference V in volts, current I in amperes and resistance R in ohms..

  This keeps your answer tightly aligned to the approved learning objective for Power.

• Power exam tip 1

  Use precise subject-specific vocabulary when you explain how to calculate electrical power from potential difference and current..

  This keeps your answer tightly aligned to the approved learning objective for Power.

• Power exam tip 1

  Use precise subject-specific vocabulary when you explain how to calculate electrical power from current and resistance..

  This keeps your answer tightly aligned to the approved learning objective for Power.

• Power exam tip 1

  Use precise subject-specific vocabulary when you explain how to rearrange power equations to calculate potential difference, current or resistance where appropriate..

  This keeps your answer tightly aligned to the approved learning objective for Power.

• Power exam tip 1

  Use precise subject-specific vocabulary when you explain how to apply MS 3b and MS 3c skills when calculating electrical power..

  This keeps your answer tightly aligned to the approved learning objective for Power.

• Power exam tip 1

  Use precise subject-specific vocabulary when you explain how to apply WS 4.5 when connecting circuit calculations to energy changes..

  This keeps your answer tightly aligned to the approved learning objective for Power.