a telephone line has r=30ohm/km l=150mh/km g=0 c=20 microf/km the characteristic impedance of line b) the propogation
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Q1
Copper and aluminum are being considered for a
a high-voltage transmission line that must carry a current of 60.0 A.
The resistance per unit length is to be 0.1500/km. The densities of
copper and aluminum are 8960 and 2600kg/m
3
, respectively.
Compute (a) the magnitude J of the current density and (b) the
mass per unit length l for a copper cable and (c) J and (d) l for an
aluminum cable.
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