The circuit shown is used to supply a variable potential difference (pd) to another circuit.
Which graph shows how the pd supplied V V\,V varies as the moving contact C is moved from position P to position Q?
Graph A
Graph B
Graph C
Graph D
The circuit shown is used to supply a variable potential difference (pd) to another circuit.
Which graph shows how the pd supplied V V\,V varies as the moving contact C is moved from position P to position Q?
Graph A
Graph B
Graph C
Graph D