1. Consider a parallel-plate capacitor immersed in sea water and driven by a voltage V₁ cos (2πvt). Let v = 4.0 × 10³ Hz: at this frequency, sea water has permittivity € = = 81€0, permeability μ = μo, and resistivity p = 0.23 2. m. (a) What is the ratio of the amplitude of the ohmic current to that of the displacement current? (b) Is the ohmic current in-phase or out-of-phase with the electric field? If out-of-phase, does the current lead or lag? By how much phase?
1. Consider a parallel-plate capacitor immersed in sea water and driven by a voltage V₁ cos (2πvt). Let v = 4.0 × 10³ Hz: at this frequency, sea water has permittivity € = = 81€0, permeability μ = μo, and resistivity p = 0.23 2. m. (a) What is the ratio of the amplitude of the ohmic current to that of the displacement current? (b) Is the ohmic current in-phase or out-of-phase with the electric field? If out-of-phase, does the current lead or lag? By how much phase?
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Chapter1: Units, Trigonometry. And Vectors
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Transcribed Image Text:1. Consider a parallel-plate capacitor immersed in sea water and driven by a voltage V cos (2évt).
Let v = 4.0 × 108 Hz: at this frequency, sea water has permittivity € = 81€, permeability µ = µ。, and
resistivity p =
0.23 Ω · m.
(a) What is the ratio of the amplitude of the ohmic current to that of the displacement current?
(b) Is the ohmic current in-phase or out-of-phase with the electric field? If out-of-phase, does
the current lead or lag? By how much phase?
(c) Is the displacement current in-phase or out-of-phase with the electric field? If out-of-phase,
does the displacement current lead or lag? By how much phase?
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