Cosmic rays are high-speed particles from space that they reach the Earth from all directions. Its origin is currently the object of studies. The Earth has a magnetic field similar to that created by a bar-shaped magnet. cylindrical, whose axis coincides with the Earth's magnetic axis. A cosmic particle P, with a positive electric charge, when still far from Earth, it approaches by traversing a line that coincides with the Earth's magnetic axis, as shown in Figure 7. Disdaining the gravitational attraction, we can say that the particle, when approaching the Earth: a) increases its speed and does not deviate from its straight path. b) decreases its speed and does not deviate from its straight path. c) has its trajectory deviated to the east. d) has its trajectory shifted to the west. e) does not change its speed or deviate from its straight path.

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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.