Laboratory Activity 3. Determining the Value of Resistances
Objective: Determine theoretically and experimentally the resistance of the given resistors
Materials: 5 Resistors. ohmmeter (or multi-tester)
Procedure
1. Prepare a set of five resistors (different)
2. Determine the value of the resistance of each resistor, based on the color codes. This will be the theoretical value of the resistance. Record this value on the table below.
3. Measure the value of the resistance, using an ohmmeter(or multi-tester). Repeat the measurement two more times. The average of these data represent the experimental value.
4. Record your data on the following table.
5. Calculate the percentage error, using the formula:
% error = theoretical value – experimental value
theoretical value
Theoretical Value | Trial 1 | Trial 2 | Trial 3 | Average of Trials 1-3 | Percentage Error
1.
2.
3.
4.
5.
Analysis Questions
1. Are your percentage error large? Do they fall within the acceptable 10% range?
2. How would you account for your calculated percentage errors?