Education Technology

Vernier - Voltage from Dry Cells

Activity Overview

Students will use a voltage sensor to measure the voltage produced by new dry cells of each size. They will also determine whether there is a relationship between dry cell size and voltage.

Before the Activity

  • Connect the TI-73 Explorer™ to the CBL™ unit
  • Connect the voltage sensor to Channel 1 in the CBL unit
  • Start the DataMate program
  • See the attached PDF file for detailed instructions for this activity
  • Print pages 33 - 38 from the attached PDF file for your class
  • During the Activity

  • Distribute the pages to your class
  • Complete the Hypothesis section on the Data Collection and Analysis page and predict the effect of dry cell size on voltage

  • Follow the activity procedures:
  • Collect new dry cells of different sizes and put them into battery holders
  • Attach the black and red leads to the positive and negative terminals on the battery holder with the help of alligator clips
  • Measure the voltage and record data for each dry cell size
  • Create a bar graph to display the voltage reading for each dry cell size
  • Understand the correlation between dry cell size and voltage
  • After the Activity

    Students will complete Student Data Collection and Analysis Sheet.

  • Review student results
  • As a class, discuss questions that appeared to be more challenging
  • Re-teach concepts as necessary