We decided it might be useful to our younger readers to describe the technology behind experiments with batteries and circuits. Basic stuff like connecting batteries in series and parallel, and making electrical connections. We plan on following this theme for the next couple Tuesdays and Fridays. It would be cool if we could virtually meet each time.
Your 101 on Experiments with Batteries and Circuits
We can construct electrical circuits using the same components and materials in various configurations. For example, some might be simple series, and more complex parallel circuits as we explore here today. But first we need to touch on electrons.
Electrons are stable sub-atomic particles carrying negative electricity charges. They are the primary carrier of electricity in solid materials. However, electrons can’t flow through solids without a battery or other energy source, and a path forming a complete closed circuit back to that energy source.
But if we simply connect the beginning and the end of that loop, we get a potentially damaging short circuit. And so we need a device somewhere in the loop to consume the electricity. This ‘load’ as engineers call it could be a light bulb, a resistor, or a buzzer etc. according to Boston University.
A Simple Definition of Series and Parallel Circuits
Experiments with batteries and circuits may require simple series, or more complex parallel circuits.
- A simple series circuit could be a single loop with two suitable light bulbs connected in line. We call this a voltage divider, because each light bulb consumes an equal part of the source voltage.
- A parallel circuit, on the other hand might have a pair of loops, each with one suitable light bulb connected in series. Each of these loads receives the full voltage. Hence the bulbs will be brighter.
If one light bulb in the simple series fails, then the circuit is broken. However, if one fails in the parable arrangement, the other will still shine. We look forward to our next meeting on Friday. See you there!
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