Which of the following statements best describe the difference between electric and magnetic fields? I. An electric field is essentially a force field that’s created around an electrically charged particle. A magnetic field is one that’s created around a permanent magnetic substance or a moving electrically charged object. II. The strength of the magnetic field is represented by either gauss or Tesla. The strength of an electric field is represented by Newton per Coulomb or Volts per Meter III. Magnetic fields are created whenever there is a flow of electric current. An electric field occurs wherever a voltage is present        a. I and III b. I, II, and III c. I and II d. II and III

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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.