18 Electric Circuits Connecting light bulb What you need  three light bulbs  a number of connecting wires  a battery What to do 1. Try to connect the.

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Presentation transcript:

18 Electric Circuits Connecting light bulb What you need  three light bulbs  a number of connecting wires  a battery What to do 1. Try to connect the light bulbs so that they are all light up.

What to do 2. Sketch all the designs by drawing connecting wires.

What to do Think about...  Do all of you have the same design? If not how many design can you find? 3. Connect the circuit you designed and see if it works. There are 4 possible designs.  In which design are the bulbs the brightest? In which design are they the dimmest? The bulbs connected in parallel with 3 branches The bulbs connected in series

 In which design do you think the battery will last the longest? The bulbs are connected in series. In which design will it run out the fastest? The bulbs are connected in parallel with 3 branches.  What happens when you remove one of the bulbs? In case of series circuit, all the bulbs go out. In case of series circuit, all the bulbs go out. In case of parallel circuit, only the bulb in the same branch as the removed bulb goes out. In case of parallel circuit, only the bulb in the same branch as the removed bulb goes out.