Analysis criteria for magnetic field due to a current.
| Analysis criteria | Details analysis criteria | |
|---|---|---|
| Direction(N→S) | Scientific | Direction (N→S) |
| Non-scientific | No arrow | |
| Opposite direction | ||
| No answer | ||
| Shape (Independent closed curve) | Scientific | Circular closed curve |
| Non-scientific | Opened curve or spiral | |
| No answer | ||
| Number of magnetic field lines | Scientific | Two or more circles |
| Non-scientific | Single circle | |
| No answer | ||