A solenoid coil with N turns per unit length, a length of L, and a radius of r0 is used to image an object of radius r0 with uniform resistivity of ρ. The coil is excited with a current
(a) What is the average power dissipated in the object? What is the voltage induced for a cylindrical shell of radius r?
(b) Given that the differential conductance of a cylindrical shell with length L, radius r, and resistivity show that the effective electrical resistance of a solenoid is given by (13.79).
Reference: Equation (13.79)
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