Lecture Note
University:
Santa Fe CollegeCourse:
ETS 2527C | Electromechanical Components and MechanismsAcademic year:
2024
Views:
292
Pages:
5
Author:
Jabin F.
= ∫_s ⋅ dA→ = ∫_s (½ cε₀E₀² ẑ) ⋅ (rdrdφ ẑ)
= ½ cε₀E₀² πr² = ½ x 3x10⁸ x 8.85x10⁻¹² x (90)² x 3.14 x (2)²
= 135 Watts Option-d Ques. 46 Page-75 E→ = E₀cos(kz - ωt) î K→ → ẑ the poynting vector in dirⁿ of K→ (k̂) (option b & d may be). lets check. S→ = (E→ x B→) / μ₀ = cε₀E²ẑ = cε₀E₀²cos²(kz - ωt) k̂ (Option - d) Ques. 47 Page 75 235 E→ = ŷ E₀cos½(kx - √3ky - 2ωt) k→ = +[k/2 î - (√3/2)k ĵ] dirⁿ of S→ is same as k→ (Free space) = î - √3 ĵ (option - d)
Electromagnetism II: Inductance and Waves
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