Magnetic Field inside a solenoid is ______.

uniform

The correct answer is option 4.uniform.

Inside a solenoid, the magnetic field is typically uniform, meaning it has the same magnitude and direction at all points within the solenoid. This uniformity arises due to the coil configuration of the solenoid, where the magnetic field lines generated by each turn of the coil add up constructively, resulting in a consistent and constant magnetic field strength throughout the interior of the solenoid.

While the magnetic field may vary in strength from one end to another or from point to point in other configurations or circumstances, within a solenoid, the magnetic field is deliberately made uniform by the arrangement of the coil turns and the current flowing through them. Therefore, the magnetic field inside a solenoid is typically considered uniform.