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Electrical Circuits

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Basics on the topic Electrical Circuits

Uma loves to do experiments so her friends surprised her with an experiment kit where she has to build electrical circuits! Before Uma starts, she reads the instructions because she knows electricity can be dangerous! Learn about electrical circuits in this video!

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Electrical Circuits exercise

Would you like to apply the knowledge you’ve learnt? You can review and practice it with the tasks for the video Electrical Circuits.
  • Label the equipment.

    Hints

    The battery has a + and - sign on it.

    The crocodile clips are attached to the wire.

    Solution

    $ $

  • Highlight the symbols of an electrical circuit.

    Hints

    There are 2 wires.

    The battery has a + and - sign on it.

    Solution

    Here we see:

    • the battery highlighted in blue.
    • the wires highlighted in green.
    • the lightbulb highlighted in yellow.
  • Which image shows an electrical circuit?

    Hints

    Here's what all of the symbols mean.

    The current needs to flow from one pole of the battery to the other.

    The positive terminal pole of the battery needs to be connected to the light bulb with the wire.

    The negative terminal pole of the battery needs to be connected to the light bulb with another wire.

    Solution

    First, the positive terminal pole of the battery needs to be connected to the light bulb with the wire.

    Then, the negative terminal pole of the battery needs to be connected to the light bulb with another wire.

    This will allow the current to flow from one pole to the other, lighting up the bulb.

  • Electrical circuits.

    Hints

    A complete electrical current can have 2 light bulbs as long as the wires connect all components.

    Here's what each symbol means.

    The current needs to flow from one pole of the battery to the other.

    Solution

    The circuits under the ✔:

    • The positive terminal pole of the battery is connected to the light bulb with the wire.
    • The negative terminal pole of the battery is connected to the light bulb with another wire.
    • Have a complete path which electricity can flow around.
    The incomplete circuits under the ✘:
    • Have an incomplete path which electricity cannot flow around.

  • What is an electrical circuit?

    Hints

    This is an electrical circuit:

    Electricity flows through an electrical circuit.

    Solution

    An electrical circuit is:

    A complete path which electricity can flow around.

  • What's the mistake?

    Hints

    Here's what each of the symbols mean.

    The current needs to flow from one pole of the battery to the other, connecting the lightbulb.

    Solution
    • In the first circuit, the wire is connected to the positive pole, but not to the light bulb.
    • In the second circuit, there are no wires connected to the light bulb.
    • In the third circuit, the wire is connected to the light bulb, but not to the negative pole.
    • In the fourth circuit, the wire is connected to the light bulb, but not to the positive pole.
    • In the fifth circuit, there is no battery.