In the figure below, an iron bar sitting on two parallel copper rails, connected to each other by a resistor, is pulled to the right with a constant force of magnitude Fape = 1.15 N. The friction between the bar and rails is negligible. The resistance R = 8.00 0, the bar is moving at a constant speed of 2.15 m/s, the distance between the rails is e, and a uniform magnetic field B is directed into the page. (a) What is the current through the resistor (in A)? A (b) If the magnitude of the magnetic field is 2.80 T, what is the length e (in m)? m (c) What is the rate at which energy delivered to the resistor (in w)? w (d) What is the mechanical power delivered by the applied constant force (in w)? w What If? Suppose the magnetic field has an initial value of 2.80 T at time t= 0 and increases at a constant rate of 0.500 T/s. The bar starts at an initial position x - 0.100 m to the right of the resistor at t= 0, and again moves at a constant speed of 2.15 m/s. Derive time-varying expressions for the following quantities. (e) the current through the 8.00 0 resistor R (Use the following as necessary: t. Assume 1(t) is in A and t is in s. Do not include units in your answer.) I(e) =| A (f) the magnitude of the applied force Fapp required to keep the bar moving at a constant speed (Use the following as necessary: t. Assume Fapp(t) is in N and t is in s. Do not include units in your answer.) Fap(e) =| N

Q: In the figure below, an iron bar sitting on two parallel copper rails, connected to each other by a…

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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.