Answer - The magnetic field inside a solenoid is uniform.
The solenoid will produce a magnetic field if it is conducting current. The right-hand thumb rule can be used to determine the magnetic field's direction. The right-hand thumb rule can be described as what would happen if we curled our fingers around a circular wire in the magnetic field's direction. There will be a closed-loop in the magnetic field.
The magnetic field within a solenoid will have straight lines and a strong field. The magnetic field will be feeble outside of the solenoid, and the field lines will curl into closed loops. As a result, a solenoid's magnetic field will be uniform.
The Magnetic Field Inside a Solenoid is
The magnetic field inside a solenoid is uniform. Since each solenoid loop carries the same amount of current, the field lines created by the various loops connect or augment one another to create a uniform magnetic field.