Three cylindrical wires, of the same length, are connected in turn between two points maintained at a constant potential difference. Their resistivities and radii are 1.50p and 1.50r (wire A), p and r (wire B), and 1.25p and 0.80r (wire C'). What is the correct ranking of PA, PB, and Po? PA, PB, and Po are resistive dissipation of wires A, B , and C, respectively. O PB = PC > PA O PB > PC > PA PA = PB > PC O PC > PA > PB O PA > PB > PC Previous Next