A) A current of 3 A flows through a 1.2 m straight conductor wire. What will be the intensity of the force exerted on it if it is tilted at an angle of 1. 45° with respect to a uniform magnetic field of 0.4 T? II. Describe the magnitude of the force if the angle is 90°? III. What if the angle was 0°? B) A helium ion, He2+, with a charge of 3.2 x 10-19 C and a mass of 6.7 x 10-27 kg penetrates a uniform magnetic field of 2.4 T at a speed of 1.5 x 107 m/s and at right angles to the field. 1. Calculate the radius of the ion trajectory.

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Magnetic Field Of Coaxial Cable

The word coaxial means same axis. So for a long straight cable to be coaxial, it must have concentric cylindrical shaped conductor around it. Coaxial cable (popularly called ‘coax’) has various applications ranging from current conductors to radiofrequency signal transmitters. This cable has lower emission losses and provides protection from electromagnetic interference which allows signals with less power to transmit over longer distances.For example, currents produced in the pickup of a stereo turntable generally travel to the amplifier through a coaxial cable.The self-inductance of a coaxial cable is another important characteristic, because it influences the propagation of electrical signals in the cable.