Question

Where do we find uniforem magnetic field in a solenoid? Why​

Answer 1

Explanation:

As the current flowing through the loops in solenoid carry same amount of current, the field lines produced by individual loops join/augment each other to produce uniform magnetic field.

Answer 2

Answer:

The force of a magnetic field is maximized when the current moves perpendicularly to the field lines, but is zero when it moves parallel to it; therefore, we can assume that in a solenoid the magnetic field is essentially uniform or constant because the wires are nearly parallel.

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