ClassX Video Lessons Youtube Channel Next Generation Science Lighthouse Lab – Circuits: Bulbs Arranged in Series
Welcome back to the Lighthouse Lab! Last time, we learned how to make a simple circuit using a battery, a bulb, a switch, and some wires. We found out that when you add more batteries in a row, the bulb gets brighter. Isn’t that exciting?
Today, we’re going to see what happens when we add more bulbs in a row, or in series, to our circuit. Are you ready to explore? Let’s dive in!
First, I have a circuit with two batteries connected in a row, one bulb, and a switch. The wires with alligator clips help connect everything together. When we turn on the switch, the electricity flows, and the bulb lights up. How cool is that?
Now, let’s try something different. We’ll open the switch and add another bulb in the row. Then, we close the switch again. What do you see? Yes, both bulbs are not as bright as before. Why does this happen? It’s because the total electricity from the batteries has to be shared between the two bulbs, so each bulb only gets a part of it.
What do you think will happen if we add a third bulb in the row? You can try setting up your own circuit at home and see what happens. Let me know how it goes!
In our next adventure, we’ll find out what happens when we take away parts from a series circuit. Until then, keep experimenting and see you next time in the Lighthouse Lab!
Thank you! Welcome back to the Lighthouse Lab. In the last video, we created a simple circuit using a battery, a bulb, a switch, and some wires. We discovered that when you add batteries in series, the brightness of the bulbs increases.
Today, we’re going to look at the effect of adding more bulbs in series on the brightness of the bulbs. Are you ready? Let’s go!
Here, I have a circuit with two batteries connected in series, a single bulb, and a switch. Wires with alligator clips connect the circuit components together. Let’s turn on the switch, and with a closed path for the current to flow, the bulb turns on. How cool is that?
Now, let’s open the switch and add another bulb in series. Now let’s close the switch. What do you notice about the two bulbs? Yes, they’re both less bright. Why is this? This is because the total voltage in the circuit has to be shared between the two bulbs, so each bulb only gets half the voltage.
How will adding a third bulb in series affect the brightness of all the bulbs? Set up your own circuit and let me know how it goes in the comments. In the next video, we’ll look at the effect of removing components in a series circuit. Until then, see you next time in the Lighthouse Lab!
