Steven Novak

Bran Planas

Period#3

2-28-05

Resistance Lab Voltage drop across resistors in series

1.  Purpose

The purpose of this lab was to verify the equation:

2.  Materials

  1. 1 Multimeter
  2. 4 Gator Clips
  3. 1 9-v battery
  4. 1 Breadboard
  5. 3 Resistors

3.  Procedure

1.  Measure the resistance of each resistor separately by using the multimeter. Record the data.

  1. Turn the multimeter to the proper setting and hook a gator clip to the two wires on Multimeter and other ends to each side of the resistor.

Resistor

2.  Put the three resistors in series in the bread board.

3.  Using the other two gator clips, hook the 9-V battery up to the resistor system.

4.  When the battery is hooked up to resistor series, measure the voltage of the battery with the multimeter, and record the data.

5.  While the battery is still hooked up and the three resistors are in series, measure the voltage drop from each resistor.

  1. To find voltage drop of Resistor 1 hook the multimeter gator clips to point A and B.
  2. To find voltage of drop Resistor 2 hook the multimeter gator clips to point C and D.
  3. To find voltage drop of Resistor 3 hook the multimeter gator clips to point E and F.
  4. Record all Data

4. Data

5.  Percent Error

Actual= 1.8

Actual= 5.67

Actual= 1.8

6.  Conclusion

There was a 0.18% error. This small amount of error could be caused by a lose connection with the wires. It could also be caused by friction in the wires. Another source of error could be that the battery was draining and lost some voltage, which could blame for the 0.18% error.