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Current and energy in a circuit

Current and energy in a circuit
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Key Info
  • Current and energy in a circuit
  • Duration: 01:25
  • Modelling is used to show how the current and charge in a circuit is not used up even though the energy store in a battery reduces over time. The presenter explains that a battery is a store of energy which can provide the 'push' or potential difference to get current flowing. In the model we see current and charge flowing in a complete circuit to light the bulb. The bulb uses energy to shine but does not use the current up. This is demonstrated in a model using water instead of current. Over time the energy from the battery is used up by the bulb.
  • Subject:

    Science

       Topic:

    Phys: Electricity - Circuits

  • Keywords: modelling, electricity, energy, current, charge, circuits, energy store, potential difference
Ideas for use in class
  • Use this clip in conjunction with an activity such as sweets being passed around the class as a current.
Background details
  • Clip language : English
  • Aspect ratio : 4x3

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