Fig. 3.43 illustrates a potentiometeric circuit by means of which we can vary a voltage V applied

Question:

Fig. 3.43 illustrates a potentiometeric circuit by means of which we can vary a voltage V applied to a certain device possessing a resistance R. The potentiometer has a length l and a resistance R0, and voltage V0 is applied to its terminals. Find the voltage V fed to the device as a function of distance x. Analyze separately the case R >> R