7. Charles de Coulomb measured attractive and repulsive forces caused by charged objects. Which statement is true about the electromagnetic force? The charge and the distance between two charged objects both influence the electromagnetic force between the two objects. Only the charge of one object that is interacting with another charged object affects the electromagnetic force between the two objects. The distance between two charged objects has no effect on the electromagnetic force between the two objects. The charge between two charged object has no effect on the electromagnetic force between the two objects. CLEAR ALL

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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.