Which of the following statement about the ratio E/H are true? I. It is in the nature of an impedanceII. It is an impedance whose value is III. It is a plane wave IV. It is called intrinsic impedance of free space of value 120

Which of the following statement about the ratio E/H are true? I. It i

1.	Which of the following statement about the ratio E/H are true? I. It is in the nature of an impedance II. It is an impedance whose value is III. It is a plane wave IV. It is called intrinsic impedance of free space of value 120
A.	I and II only
B.	II and III only
C.	I, II and IV only
D.	II, III and IV only
Answer» D. II, III and IV only

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Consider two fields E = 120 cos (106 t x) ay V/m and H = A cos (106 t x) az A/m The values of A and which will satisfy the Maxwell's equation in a linear isotropic homogeneous lossless medium with r = 8 and r = 2 will be <table width="400px" border="0"><tr><td>A (in A/m)</td><td> (in rad/m)</td></tr><tr><td>A. 1</td><td>0.0105</td></tr><tr><td>B. 1</td><td>0.042</td></tr><tr><td>C. 2</td><td>0.0105</td></tr><tr><td>D. 2</td><td>0.042</td></tr></table>
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Which of the following statement about the ratio E/H are true? I. It is in the nature of an impedanceII. It is an impedance whose value is III. It is a plane wave IV. It is called intrinsic impedance of free space of value 120

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Which of the following statement about the ratio E/H are true?
I. It is in the nature of an impedance
II. It is an impedance whose value is
III. It is a plane wave
IV. It is called intrinsic impedance of free space of value 120