A solenoid with 100 turns per cm is disposed longitudinally to the along the X axis, with an electric current of 2 A traveled in a clockwise direction, has an iron core inside. Therefore, determine: (a) the magnetic field produced by this solenoid inside; (b) the magnetic force exerted on a electron (e = 1.6 x 10-19 C), with a speed in the + Y direction and modulus 10O0km / s.
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