Current Electricity

This unit bundles student expectations that address electric current and simple circuit analysis to build understanding as they relate to practical electrical devices. Students add to their understanding of conductors and insulators while studying series and parallel circuits. Students characterize materials as conductors or insulators based on their electrical properties. In addition, students conduct investigations in terms of current through, potential difference across, resistance of, and power used by electric circuit elements connected in both series and parallel combinations.

ASSIGNMENT 1:

1. Watch the video above on insulators and conductors.

2. As you watch, create a double-bubble map comparing and contrasting insulators and conductors.

ASSIGNMENT 2:

1. Open the link above to complete a virtual lab over insulators.

2. Open the data table icon and copy the data table you will fill in while completing the lab.

3. Fill in the table by completing the virtual lab, following the instructions on the left side of the screen.

4. Once you've collected your data, create a graph of the data.

5. Write 3-5 complete sentences summarizing your findings.

ASSIGNMENT 3:

1. Watch the video above on electric current.

2. As you watch, create a bubble map on electric current.

3. Be sure to include any relevant formulas and indicate what each of the variables represent.

ASSIGNMENT 4:

1. Watch the above videos on circuits.

2. Create a double bubble map comparing and contrasting series and parallel circuits.

3. Be sure to include relevant formulas and what the variables in the formulas represent.

ASSIGNMENT 5:

1. Open the link above to complete a virtual lab over resistors and circuits.

2. Click on the data table icon on the left side of the screen and use a ruler to copy the table on to your own paper.

3. Fill in the table by completing the virtual lab, following the instructions on the left side of the screen.

4.Once you've collected your data, open the journal icon and answer the questions using complete sentences on your paper.

ASSIGNMENT 6:

1. Watch the videos above on current calculations for a series circuit and parallel circuits,

2. Create a double bubble map, and be sure to note the differences in how to calculate each Req. The formula V=IR applies to both circuit types.

new doc 2020-04-04 14.26.49.pdf

ASSIGNMENT 7:

1. Watch the video above on current calculations for a parallel circuit and use the information to complete parallel circuit practice problems.

2. Get a copy of the problems from me.

ASSIGNMENT 8:

1. Use the link above to virtually create circuits and complete the assignment.

2. Write 10 complete sentence observations. Be sure to highlight the differences between series and parallel circuits.

ASSIGNMENT: SKIP

  • Design and conduct an investigation to determine the value of an unknown resistor by wiring the unknown in series or in parallel with a known resistor. Write an abstract to summarize the investigation.

Include the following in the abstract:

  • Brief explanation of experimental procedure
  • Identification of the connection between the resistors
  • Experimentally measured electric current and voltage values
  • Sample calculation used to determine unknown resistor
  • Simple calculation used to determine the power dissipated by the resistor
  • Percent error and discussion on how to improve experimental procedure
  • Prediction of the total resistance if the connection was switched from series to parallel (or vice-versa)

Note: Possible extensions include using multiple voltage sources, more than two resistors, or using a combination circuit.

You are done with the unit! If you've got extra time, I have a circuit kit for you to explore.