Introduction:
When we move towards or away from a conducting wire, the magnetic field around the wire will change. This change in the magnetic field can be explained by the principles of electromagnetism and the right-hand rule.

Explanation:
Magnetic Field Around a Conductor:
- A conducting wire carrying current produces a magnetic field around it. The magnetic field lines form concentric circles around the wire, with the wire at the center.
- The direction of the magnetic field can be determined using the right-hand rule. If you point your right thumb in the direction of the current flow, the fingers will wrap around the wire in the direction of the magnetic field lines.

Moving Towards the Conducting Wire:
- As we move towards the conducting wire, the number of magnetic field lines passing through a given area increases. This is because we are getting closer to the source of the magnetic field.
- The magnetic field strength (B) is directly proportional to the number of field lines passing through a given area. Therefore, as we move closer to the wire, the magnetic field strength increases.

Moving Away from the Conducting Wire:
- Conversely, as we move away from the conducting wire, the number of magnetic field lines passing through a given area decreases. This is because we are moving farther away from the source of the magnetic field.
- As a result, the magnetic field strength decreases when we move away from the wire.

Summary:
- When we move towards a conducting wire, the magnetic field strength increases because we are getting closer to the source of the magnetic field.
- On the other hand, when we move away from the conducting wire, the magnetic field strength decreases as we are moving farther away from the source of the magnetic field.
- This change in the magnetic field can be explained by the principles of electromagnetism and can be visualized using the right-hand rule.