Two long, straight wires cross each other at a right angle, and each carries the same current I . Which of the following statements is true regarding the total magnetic field due to the two wires at the various points in the figure? More than one statement may be correct. a.The field is strongest at points B and D. b.The field is strongest at points A and C. c.The field is out of the page at point B and into the page at point D. d.The field is out of the page at point C and out of the page at point D. e.The field has the same magnitude at all four points.

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A: I1=12.5 AI2=11.6 Ad=10 cm=0.1 m

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.