State whether the following statement is true or false :
The magnetic field inside a long circular coil carrying current will be parallel straight lines.

Explanation

To determine whether the statement "The magnetic field inside a long circular coil carrying current will be parallel straight lines" is true or false, we can analyze the magnetic field produced by a current-carrying coil.

### Step-by-step Solution:

1. **Understanding the Coil**: A long circular coil, also known as a solenoid, is a wire wound in a circular shape. When an electric current passes through this coil, it generates a magnetic field around it.

2. **Magnetic Field Lines**: The magnetic field lines produced by a current-carrying coil can be visualized. Inside the coil, the magnetic field lines are concentrated and run parallel to each other. This is similar to the magnetic field inside a bar magnet.

3. **Direction of Magnetic Field**: According to the right-hand rule, if you curl the fingers of your right hand in the direction of the current flow in the coil, your thumb will point in the direction of the magnetic field inside the coil.

4. **Field Characteristics**: Inside a long circular coil, the magnetic field is uniform and parallel. This means that the magnetic field lines are straight and evenly spaced, indicating a consistent magnetic field strength throughout.

5. **Conclusion**: Since the magnetic field lines inside the long circular coil are indeed parallel straight lines, the statement is true.

### Final Answer:
The statement is **True**.

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