ELEC 101, Spring 2005
Prof. Rich Kozick

## Laboratory 1 Basic Electrical Quantities and Measuring Voltage

This lab session provides an introduction to three fundamental electrical quantities: charge, current, and voltage. We will also learn how to measure voltages with the multimeter and the oscilloscope. We will use an interactive computer program (and electronic lesson or E-lesson) developed by Professor Mastascusa so that you can explore these topics at your own pace. You are encouraged to revisit the E-lessons throughout this course!

Start the E-lesson Exploring Electrical Engineering by clicking the link below.
http://www.facstaff.bucknell.edu/mastascu/eLessonsHTML/EEIndex.html
Or, you can get to the E-lesson as follows.

• On the Bucknell web site, do a People Search for mastascusa.
• Click on Professor Mastascusa's Web Page.
• Scroll to the bottom of the page, and click on Basic EE Lessons.

1. Under the menu item Basic Concepts, go through the lessons on Charge, Current, and Voltage. Please do some of the exercises given in the lessons - you don't have to do them all now. Before moving on to item 2, provide brief explanations to the lab instructor for charge, current, and voltage. That is, be sure to understand the meaning of each of these fundamental quantities are before moving on!

You will also read about charge, current, and voltage in Chapter 1 of the text. In your lab notebook, explain charge, current, and voltage in your own words.

2. Do the lesson on Measuring Voltages. Get there by going back to Basic Concepts, and then go to the Measurements topic. This lesson will teach you how to use the digital multimeter (DMM) to make voltage and other measurements, and it will also teach you how to use the oscilloscope. Note you will have to click to the lesson on measuring voltage. Omit any exercises using the A/D board.

Use the DMM to measure a voltage from the power supply, and use the oscilloscope to measure a sinusoidal voltage produced by the function generator. Make some notes in your lab notebook about how to use these instruments.

3. Feel free to browse other E-lessons in the Exploring Electrical Engineering tutorial to get an idea which topics are included. However, you do not have to do any other lessons for this week.

4. You are free to use the EE laboratory at any time to work on lab projects. The combination to the door lock will be given to you during the lab session. The same combination works on the other EE labs (Dana 303 and 305).

Thank you, and have fun!