A coaxial cable is constructed from a central cylindrical conductor of radius rA = 1.40 cm carrying current IA = 8.90 A in the positive x direction and a concentric conducting cylindrical shell with inner radius rB = 14.0 cm and outer radius rC = 15.0 cm with a current of 15.0 A in the negative x direction (see figure below). What are the magnitude and direction of the magnetic field at the following points?   (a) at point O, a distance of 10.0 cm from the center of the coaxial cable along the y axis magnitude      µT direction      ---Select--- +x −x +y −y +z −z The magnitude is zero. (b) at point P, a distance of 20.0 cm from the center of the coaxial cable along the y axis magnitude      µT direction      ---Select--- +x −x +y −y +z −z The magnitude is zero.

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Magnetic Force

A magnetic force arises when a charged particle or a current-carrying conductor is placed in a magnetic field. It is created because of the movement of the charged particles.