On the other hand, since lightbulbs use electricity, the more bulbs you hook up in a series circuit, the dimmer the light from the individual bulbs will get. Each bulb offers a certain resistance to the flow of electrons, and just like the voltage, the resistance increases as more bulbs are added. The greater the total resistance, the harder it is for the electrons to make it around the circuit, so the bulbs will be dimmer. Only when the numbers of bulbs and batteries in a series circuit are balanced will all the components work at maximum efficiency. Electricity in circuits can produce light.
Electrical circuits require a complete loop through which an electrical current can pass.
Electrical circuits provide a means of transferring electrical energy when heat, light, sound, and chemical changes are produced. Top of Page Managing Time and Students Classroom management is always a critical factor for any successful lesson, and the Dirtmeister's Science Lab is no exception. In this case, all students can make predictions while one or two volunteers can carry out the activity in front of the room. With the entire class working in teams, the hands-on portion of the challenge will take approximately 30 minutes to complete. Extensions on Circuits Have the class try to build a super series circuit.