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A solenoid has a core of inner radius 25 cm and outer radius 26 cm, around...

A solenoid has a core of inner radius 25 cm and outer radius 26 cm, around which 3500 turns of a wire are wound. If the current in the wire is 11 A, find the magnetic field : (i) outside the solenoid. (ii) inside the core of the solenoid, and (iii) in the empty space surrounded by the solenoid.

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