| 1. | the \(y\)-component of the magnetic field \(=0\) |
| 2. | the \(x\)-component of the magnetic field \(=0\) |
| 3. | the \(x\)-component of the magnetic field is zero, only at the origin. |
| 4. | the \(y\)-component of the magnetic field is zero, only at the origin. |
| 1. | ![]() |
2. | ![]() |
| 3. | ![]() |
4. | ![]() |