For the potentiometer of given figure:
a. What are the voltages Vab and Vbc with no load applied?
b. What are the voltages Vab and Vbc with the indicated loads applied?
c. What is the power dissipated by the potentiometer under the loaded conditions of given figure?
d. What is the power dissipated by the potentiometer with no loads applied? Compare it to the results of part (c).