a) Devise a procedure for your investigation and briefly describe your experimental design. Include a labeled sketch of your setup. b) What important physical quantities change during the experiment? What are the independent and dependent variables in your experiment? c) Build the circuit according to your picture. Tht'enI call your lab instructor over to check the circuit. After you've done that, you can turn on the power source. d) Record your data in an appropriate manner. Construct a graph. Think what mathematical functions may fit you data (Excel has features that let you explore how well different functions fit your data). e) Find a simple mathematical function that fits your data well. Think of uncertainties (error bars). Does the function you chose cross through the regions defined by the error bars