Four proposed field maps are described in the table. Each is intended to show a uniform field between a north pole on the left and a south pole on the right.
| Map | Shape of lines | Spacing | Arrow direction |
|---|---|---|---|
| P | Straight and parallel | Equal | Left to right |
| Q | Straight and parallel | Unequal | Left to right |
| R | Straight and parallel | Equal | Right to left |
| S | Curved and spreading | Unequal | Right to left |
Which identifies the correct map and the fault in map Q?
R is correct; Q represents a reversed field direction.
R is correct; Q represents a changing field strength.
P is correct; Q represents a reversed field direction.
P is correct; Q represents a changing field strength.