Discussion 1. Comment about the obtained results? 2. Explain the function of the variable resistor R used in the circuit. 3. What is the potentiometer represents? Did you use it in the experiment? 4....

Extracted text: Discussion 1. Comment about the obtained results? 2. Explain the function of the variable resistor R used in the circuit. 3. What is the potentiometer represents? Did you use it in the experiment? 4. A discussion of the techniques for measuring the meter internal resistance for meter. 5. In Fig. 1, measure the current pass through the 25K2 series resistance and the voltage different the shunt resistance with 50K, 60K, 70K. 80K, 90K, and 100K.