Question
The magnetic field inside a long straight solenoid
is:Solution
Inside a long straight solenoid, the magnetic field lines are parallel and evenly spaced, indicating a uniform field. The field is given by: B = μ₀nI Where μ₀ is permeability, n is number of turns per unit length, and I is current. Outside the solenoid, the field is nearly zero. So, the field inside is uniform.
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