SEEI Technical Write-Up

Below are the results for experiment SEE1.

Measuring nominal resistance versus measured resistance of below resistors.
• 1st resistor - Brown, Black, Red – 1000 ohms nominal versus 972 measured.
• 2nd resistor- Blue, Gray, Yellow – 680,000 ohms nominal versus 670,000 measured.
• 3rd resistor - Gray, Red, Orange – 82,000 ohms nominal versus 80,000 measured.

Measuring voltage resistance accross circuit using 2 AA batteries + DC voltage scale.
• 1st resistor - nominal versus actual = 3.0/3.26 micro amps
• 2nd resistor -nominal versus actual =4.40/5.0 micro amps
• 3rd resistor - nominal versus actual = 36.5/40.0 micro amps


The difficulties the group encountered in the set up and testing phases were as follows:
1. We lacked basic understanding of OHM’s law, concepts of circuits, circuit boards and acceptable levels of error to truly understand if we were doing the experiments correctly.
2. We had different levels of knowledge about circuits and electricity which confused each other when measuring volts versus amps.
3. Converting amps and volts, using a digital meter, was confusing for the first few tries. As our understanding of electricity and mathematical conversions became clearer, we were able to measure and convert volts, amps, mili-amps of the resistors much faster.