Honors Physical Science
3.03 Build Your Own Circuit Wokrsheet
Part 1: Answer the following questions (20 points)
1. Name and describe the components needed to make a complete circuit.
In order to make a complete circuit, you must include a voltage source and an unbroken path. The voltage source is typically a battery, and it is where the electric current is first created by the moving electrons. The unbroken path is generally made out of wire, and it creates a full path so the electrons can move in without being disturbed.
2. Compare and contrast a series and parallel circuit. Give at least one way that they are alike and one way that they are different.
In a series circuit, the electrons only have one path to flow through, and if that path is broken the electrons cannot flow. A parallel circuit has multiple paths that electrons can follow, and it can work as long as one of the multiple paths is not broken.
3. Ohm's law is represented by the equation I = V/R. Explain how the current would change if the amount of resistance decreased and the voltage stayed the same.
If the amount of resistance decreased and the voltage stayed the same in a circuit, the current would increase in power.
4. Define resistance and describe what would happen to a light bulb if the voltage increased but the resistance stayed the same.
Resistance determines how much a component slows the flow of electrons. If the voltage of a light bulb increased, but the resistance stayed the same, the amperage of the current would increase. Part 2: Design your own circuit (40 points)
Design a circuit and draw a circuit diagram using the proper symbols. Your circuit must contain a battery, a light bulb (if you would like to substitute another item that uses electrical power you may), a switch, an ammeter, and a resistor. After you draw your circuit, complete the questions which ask you to describe the circuit that you have...
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