A U-shaped conductor is locked in place while a vertically aligned, 3.0m-long cylindrical conductor slides across it to the left with a speed of 4.0m/s. The conductors maintain contact at all times forming a closed loop. An external magnetic field of 3.0T passes through the conductors as shown (in the image) A) At the moment the two conductors form a perfect square, what is the magnetic Flux passing between them? Is this Flux increasing or decreasing? B) What are the directions of the induced current and the induced magnetic field the conductors generate? Explain how you know your answers.

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A: Expression for magnetic flux -  ϕB=B×A=Blx Expression for emf -  ε=ddtϕB=ddtBlx=Blddtx=Blv

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A: Given:  current, I = 1 A  Area, A = 0.2 m2  magnetic field, B = 1 T

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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.