1
GATE ECE 1995
MCQ (Single Correct Answer)
+1
-0.3
Copper behaves as a
A
conductor always.
B
conductor or dielectric depending on the applied electric field strength.
C
conductor or dielectric depending on the frequency.
D
conductor or dielectric depending on the electric current density.
2
GATE ECE 1994
MCQ (Single Correct Answer)
+1
-0.3
A plane electromagnetic wave traveling along the +z-direction, has its electric field given by Ex = 2 cos $$\left( {\omega t} \right)$$ and Ey = 2 cos $$\left( {\omega t + {{90}^ \circ }} \right)$$ the wave is
A
linearly polarized
B
right circularly polarized
C
left circularly polarized
D
elliptically polarized
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