**Pattern of Magnetic Field due to a Circular Coil Carrying Current**

The magnetic field produced by a circular coil carrying current follows a specific pattern. Let's discuss the pattern and its details.

**1. Magnetic Field Lines:**
When a current flows through a circular coil, it creates a magnetic field around it. The magnetic field lines produced by the coil form concentric circles that are perpendicular to the plane of the coil.

**2. Direction of Magnetic Field:**
The direction of the magnetic field lines is determined using the right-hand rule. If we imagine holding the coil with our right hand such that our thumb points in the direction of the current, the curling fingers will represent the direction of the magnetic field lines.

**3. Magnetic Field Strength:**
The strength of the magnetic field produced by a circular coil depends on various factors, including the number of turns in the coil, the current flowing through it, and the radius of the coil. According to Ampere's law, the magnetic field strength at the center of the coil is directly proportional to the product of the current and the number of turns per unit length.

**4. Magnetic Field Inside the Coil:**
Inside the coil, the magnetic field lines are parallel and evenly spaced. They are directed from the south pole to the north pole of the coil, creating a uniform magnetic field inside.

**5. Magnetic Field Outside the Coil:**
Outside the coil, the magnetic field lines curve in a circular fashion. As we move away from the coil, the magnetic field strength decreases, and the field lines become more spread out. The magnetic field outside the coil is not uniform but follows a decreasing pattern with distance.

**6. Magnetic Field along the Axis of the Coil:**
When considering the axial region of the coil (along the central axis), the magnetic field lines are straight and parallel to each other. The strength of the magnetic field decreases as we move away from the center of the coil along this axis.

**7. Magnetic Field at the Center of the Coil:**
At the center of the coil, the magnetic field lines are perpendicular to the coil's plane and are closely spaced. The magnetic field strength is maximum at the center and decreases as we move away from it.

**In conclusion,** the magnetic field pattern due to a circular coil carrying current consists of concentric circles of magnetic field lines. Inside the coil, the field lines are parallel and evenly spaced, while outside the coil, they curve in a circular manner. The magnetic field strength is maximum at the center and decreases as we move away from it. The direction of the magnetic field lines can be determined using the right-hand rule. It's important to note that the magnetic field pattern and strength can be influenced by factors such as the number of turns in the coil, the current flowing through it, and the coil's radius.

One side clockwise and one aide anticlockwise. Use right hand thumb rule. U will know the direction of magnetic field. Put ur right thumb in the direction of current. Now observe the direction of fingers it is clockwise or anticlockwise. U will get the direction of the magnetic field