The current passing through a copper wire is I=20 A. The resistivity of copper at room temperature is given as p = 1.7 x 10-8m. The cylindrical wire has a length of L=30 m and a diameter of D=3,7 mm. Take z = 3. b) Calculate the magnitude of the external electric field required to generate this current, in mV/m.
The current passing through a copper wire is I=20 A. The resistivity of copper at room temperature is given as p = 1.7 x 10-8m. The cylindrical wire has a length of L=30 m and a diameter of D=3,7 mm. Take z = 3. b) Calculate the magnitude of the external electric field required to generate this current, in mV/m.
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Transcribed Image Text:The current passing through a copper wire is I=20 A. The resistivity of copper at room temperature is given as
p = 1.7 x 10-8m. The cylindrical wire has a length of L=30 m and a diameter of D=3,7 mm. Take = 3.
b) Calculate the magnitude of the external electric field required to generate this current, in mV/m.
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