A silver wire has resistivityp = 1.20 x 10-8 2-m and a cross-sectional area of 5.30 mm2. The current in the wire is uniform and changing at the rate of 2350 A/s when the current is 140 A. (a) What is the magnitude of the (uniform) electric field in the wire when the current in the wire is 140 A? (b) What is the displacement current in the wire at that time? (c) What is the ratio of the magnitude of the magnetic field due to the displacement current to that due to the current at a distancer from the wire?
A silver wire has resistivityp = 1.20 x 10-8 2-m and a cross-sectional area of 5.30 mm2. The current in the wire is uniform and changing at the rate of 2350 A/s when the current is 140 A. (a) What is the magnitude of the (uniform) electric field in the wire when the current in the wire is 140 A? (b) What is the displacement current in the wire at that time? (c) What is the ratio of the magnitude of the magnetic field due to the displacement current to that due to the current at a distancer from the wire?
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Transcribed Image Text:A silver wire has resistivityp = 1.20 × 10-8 2.m and a cross-sectional area of 5.30 mm2. The current in the wire is uniform and
changing at the rate of 2350 A/s when the current is 140 A. (a) What is the magnitude of the (uniform) electric field in the wire
when the current in the wire is 140 A? (b) What is the displacement current in the wire at that time? (c) What is the ratio of the
magnitude of the magnetic field due to the displacement current to that due to the current at a distance r from the wire?
(a) Number
Units
(b) Number
Units
(c) Number
Units
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