Copper and aluminum are being considered for a high-voltage transmission line that must carry a current of 60.0 A. The resistance per unit length is to be 0.150 /km.The densities of copper and aluminum are 8960 and 2600 kg/m3, 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.
Ohm's law
Ohm’s law is a prominent concept in physics and electronics. It gives the relation between the current and the voltage. It is used to analyze and construct electrical circuits. Ohm's law states that the voltage across a conductor is directly proportional to the current flowing through it.
Path of Least Resistance
In a series of alternate pathways, the direction of least resistance is the actual or metaphorical route that offers the least resistance to forwarding motion by a given individual or body.
Copper and aluminum are being considered for a
high-voltage transmission line that must carry a current of 60.0 A.
The resistance per unit length is to be 0.150 /km.The densities of
copper and aluminum are 8960 and 2600 kg/m3, 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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