PHYS 208 Midterm: PHYS 208 TAMU Exam 3 2007
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25 points. (a) there are three very long, extremely thin, parallel wires. In cross-section, the wires are located at the corners of a square of side w. if all currents flow into the page, find the magnetic field vector at the fourth corner. ii i2 cross section w: 24\ perspective. A very long thin wire carries a current i. It has the shape and dimensions shown below. Find the magnetic field at the point p. If you work neatly i will find more partial credit for you! A rectangular circuit containing a capacitor c is located near an infinitely long narrow wire carrying a current i0 coswt where i0 and w are constants. The circuit has no resistance and its self-inductance can be ignored. Find the charge on the top capacitor plate as a function of time. Long straight wire, current i = io coswt. Working neatly will help you get it right.
