Question 8: A rectangular loop of wire wraps around your (open, vertical) laptop screen (31.0 cm by 22.0 cm) and carries a clockwise (from your point of view) current I = 0.3 A around the outside edge of your laptop screen. There is a uniform magnetic field B = 52.0 mT directed horizontally towards the right of your laptop screen. Determine (i) the magnitude and direction of the magnetic moment of the loop and the (ii) magnetic torque on the loop.

Q: 6.0 m/s •D 3.0 m •B 2.0 kg

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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.