Current and Resistance8517.39The resistance per unit length of the cable is ()25222.00 W m2.2210m300 AILRLL I−====×ΩPPFrom RLAρ=, the resistance per unit length is also given by A=. Hence, the cross-sectional area is 2rAπ==, and the required radius is 8-51.710m0.016 m1.6 cm2.2210 m−×Ω⋅==r17.40(a) The power input to the motor is ( ) ( )( )120 V1.75 A210 W0.210 kWinputVI
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