University:
Santa Fe College
Course:
PHY 2004 | Applied Physics 1
Academic year:

2024
Views:

77

Pages:

6
Author:

Jabin F.

# Charge Conjugation (C): C(e) → -e C(p) → -p C(n) → -n C(J) → -J C(S) → -S ⇒ All three operations together are known as CPT operation. CPT operation: CPT invariant. Maxwell's equations are CPT invariant. New Q-78: Pre. page: E.B → -(E.B) ⇒ odd under parity and odd under time reversal ⇒ E.B + (E.B) → even Page-79 A medium εᵣ > 1, μᵣ = 1, σ > 0 is semi-transparent to an electromagnetic wave when: (a) Conduction current << Displacement current. (b) Both Conduction and Displacement current are zero. (c) Conduction current >= Displacement current. (d) Conduction current = Displacement current. Solution J_c / J_d = (σ / εω) semi transparent poor conductor ⇒ J_c << J_d For opaque good conductor J_c >> J_d Q. No. 80 Page-68 A plane electromagnetic wave of wavelength λ is incident on a circular loop of conducting wire. The loop radius is a (acut). The angle (in degree), made by the Poynting vector with the normal to the plane of the loop, to generate a maximum induced electric signal is: [\oint\vec{E}d\vec{l}=-\int\frac{d\vec{B}}{\partial t}d\vec{S}] To have maximum induced electric field, B ⊥ normal (n). Fix then: