Electromagnetic Field Theory - Study Mode
[#181] The electric field component of a uniform plane wave propagating in a lossless magnetic dielectric medium is given by $$overrightarrow E left( {t,,z}
ight) = {{hat a}_x}5cos left( {{{10}^9}t - frac{{20}}{3}z}
ight){ ext{V/m}}{ ext{.}}$$ xa0 xa0 xa0 If η 0 represents the intrinsic impedance of the free space, the corresponding magnetic field component is given by
Correct Answer
(B) $$overrightarrow H left( {t,,z}
ight) = {{hat a}_y}frac{{10}}{{{eta _0}}}cos left( {{{10}^9}t - frac{{20}}{3}z}
ight){ ext{A/m}}$$
[#182] A small current carrying circular loop lies on a vertical plane. P is a point of observation on the orthogonal vertical plane passing through the centre of the loop and θ is the angle between O and OP as shown in the given figure. The θ component of the H-field will vary as:
Correct Answer
(A) cosθ
[#183] Equation of the plane passing through the point [3overrightarrow i - overrightarrow j + overrightarrow k ] xa0 and perpendicular to the vector [4overrightarrow i + 2overrightarrow j - overrightarrow k ] xa0 is
Correct Answer
(D) 4x + 2y - z = 9
[#184] The divergence of the magnetic flux density B is given as:
Correct Answer
(A) ∇.B = 0
[#185] Consider the following statements regarding a plane wave propagating through free space: The direction of field 1. 'E' is perpendicular to the direction of propagation 2. 'H' is perpendicular to the direction of propagation 3. 'E' is perpendicular to the direction of field 'H' Which of these statements are correct?
Correct Answer
(D) 1, 2 and 3