Solved: A 1.50-m cylinder of radius 1.10 cm is made of a
Chapter 25, Problem 25.69(choose chapter or problem)
A 1.50-m cylinder of radius 1.10 cm is made of a complicated mixture of materials. Its resistivity depends on the distance x from the left end and obeys the formula r1x2 = a + bx2 , where a and b are constants. At the left end, the resistivity is 2.25 * 10-8 # m, while at the right end it is 8.50 * 10-8 # m. (a) What is the resistance of this rod? (b) What is the electric field at its midpoint if it carries a 1.75-A current? (c) If we cut the rod into two 75.0-cm halves, what is the resistance of each hal
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