A coaxial cable consists of a long thin wire surrounded by a cylindrical conductor of radius 5mm. A current of 20A flows to the right in the wire and an equal current flows to the left in the outer conductor. Using Ampere’s law, find the magnetic field at a point 2.5 mm from the central wire, and a point 2.5 cm from the central wire. Sketch the magnetic field lines.

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A: radius, r=0.200 mcurrent, I=4.50 Amagnetic field, B=0.800 Twhen the direction of the current is from…

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Q: A straight wire carries a current of 40 A in a uniform field whose magnitude is 80 mT. If the force…

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Q: Consider a 7.63-meter-long solenoid with 5240.0 turns of wire carrying a current 8.83 A. Running…

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Q: The figure below shows a magnetic field of magnitude 500 Gs that extends horizontally from west to…

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Q: A +6µC point charge is moving at a constant speed of 8x10< m/s in the +y-direction, relative to a…

A: q= 6 x 10-6 C v= 8 x 106m/s

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A: Draw the diagram of the arrangement as shown below:

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Q: A long straight wire carries a current of 40 A in a region where a uniform external magnetic field…

A: Magnetic field external = 30x 10^-6 T d= 3.5 cm or 0.035 m

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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.