Introduction:
It is true that a current carrying conductor produces a magnetic field but not an electric field, while a charge moving with uniform velocity produces both electric and magnetic fields. This may seem contradictory at first, as current carrying conductors consist of charges moving at a uniform velocity. However, to understand this apparent contradiction, we need to delve deeper into the concepts of current, charges, and their behavior.

Current Carrying Conductor:
- A current is defined as the flow of electric charge through a conductor. In a current carrying conductor, the charges (electrons) move in response to an applied electric field.
- The motion of these charges creates a magnetic field around the conductor, according to Ampere's law. This magnetic field is responsible for the various phenomena associated with current, such as the attraction or repulsion of magnets, the operation of electric motors, etc.
- However, it is important to note that the charges within the conductor do not contribute to an electric field outside the conductor. This is because the charges are already in motion due to the applied electric field, and there is no additional electric field produced by them.

Charge Moving with Uniform Velocity:
- When a charge moves with a uniform velocity, it creates both an electric field and a magnetic field.
- The electric field is produced by the charge due to its inherent property. It is a force field that interacts with other charges, attracting or repelling them based on their polarity.
- The magnetic field is created due to the motion of the charge. According to Ampere's law and the Biot-Savart law, a moving charge generates a magnetic field around it.
- The strength and direction of both the electric and magnetic fields depend on the velocity and magnitude of the charge.

Explanation:
- The apparent contradiction arises because while a current carrying conductor consists of charges moving at a uniform velocity, the collective motion of these charges cancels out any net electric field outside the conductor. The individual electric fields produced by the charges within the conductor cancel each other out due to their random distribution and motion.
- On the other hand, a single charge moving with a uniform velocity does not cancel out its own electric field, resulting in the presence of an electric field along with the magnetic field it produces.

Conclusion:
In summary, a current carrying conductor produces a magnetic field but not an electric field because the collective motion of charges within the conductor cancels out any net electric field. On the other hand, a charge moving with a uniform velocity produces both electric and magnetic fields due to its inherent properties and motion. Understanding these concepts helps explain the difference in the fields produced by current carrying conductors and moving charges.

Current carrying conductor carries both electron and protons in equal amounts thus the field produced by the current carrying conductor cancel outs as field produced by positive and negative charge is in opposite direction.