Figure 1 shows the results from an experiment investigating how the current through a specialized semi-conducting Component Φ\PhiΦ varies with the potential difference across it.

| Potential Difference (V) | Current (mA) |
|---|---|
| 0.0 | 0 |
| 1.0 | 35 |
| 2.0 | 60 |
| 3.0 | 78 |
| 4.0 | 90 |
| 5.0 | 98 |
Describe the relationship between the current and the potential difference as shown in the graph in Figure 1.