Draw a circuit diagram of a potential divider using a cell and a rheostat. Also mark the output terminals.
Draw a diagram as given in Fig. showing use of a rheostat as a potential divider.
Connect the terminals of rheostat as drawn above using
(i) the end terminals (1) and (2) connected to input potential (battery)
(ii) one end terminal and the other variable terminal for variable voltage.
When rheostat has to be used as a potential divider across the cell, the variable voltage is derived using any one end terminal and the variable terminal of the rheostat as shown in fig.
1