Lab experiment #1 Resistor Color Code and Measurement of Resistance

Objectives:

1. To measure the value of resistors from their color code.
2. To measure resistors of different values.
3. To measure a resistor using the various resistance rangers of an ohm-meter.
4. To measure resistance across each combination of two of the three terminals of a potentiometer and to observe the resistance change as a shaft of the potentiometer.

Each resistors has its own color codes and through these codes we can identify each resistors according to their colors. The ohm (symbol: Ω) is the SI derived unit of electrical resistance, named after German physicist Georg Simon Ohm. Although several empirically derived standard units for expressing electrical resistance were developed in connection with early telegraphy practice, the British Association for the Advancement of Science proposed a unit derived from existing units of mass, length and time and of a convenient size for practical work as early as 1861. The definition of the "ohm" unit was revised several times. Today the value of the ohm is expressed in terms of the quantum Hall effect.

Reflection:

      

     I realized that it's so hard to identify each colors in a resistor because it's very small that you really to focus on it. That's why it takes time for us to recognize it because of that. But since that we are 5 in our group, we can catch up with the time and requirements gave by our professor .

As a conclusion, the following colors has its own identification like in the first band it indicates the significant digit, in the second band the multiplier, third band is the tolerance and the last as possible the failure rate.