Electricity will only flow from negative to positive when the circuit is closed. It is important not only to close the circuit, but also to use the right light bulb.
If the voltage and amperage of the light bulb do not match what the circuit provides, it will:
- shine too dimly,
- overheat,
- or not work at all.
Only when everything matches—volts, amps, and a closed circuit—can electricity do its job safely and successfully. This applies not only to light bulbs, but to all electrical devices.
You press the switch, and the light bulb lights up. But do you know what kind of light it is? Let’s find out together!