91. Maxwell's equation for EM waves can be applied to
1. Dielectric medium
2. Conductive medium
3. Plasma
4. Free space
Select the correct choice:
1. Dielectric medium
2. Conductive medium
3. Plasma
4. Free space
Select the correct choice:
92. What does the expression $$\frac{1}{2}\overrightarrow J .\overrightarrow A $$ represent?
93. If the potential difference between points A (1, 0, 0) and B (2, 0, 0) is 10 V, determine d for point C (d, 0, 0), when VBC is 6 V in a uniform field.
94. Following equations represent four travelling waves. Which one has the maximum speed?
95. A and B are two points at same distance from the centre of a short electric dipole on axial line and equatorial line respectively. E1 and E2 are respectively the resultant electric fields due to the dipole at these points. Identify the only correct condition between E1 and E2 from the following for this situation.
96. What is not correct about a transmission line terminated in its characteristic impedance?
97. Find the work done when a force $$F = \left( {\vec i + 2\vec j + 3\vec k} \right)N$$ acting on a particle takes it from the point $${{\vec r}_1} = \left( {\vec i + \vec j + \vec k} \right)m$$ to the point $${{\vec r}_2} = \left( {\vec i - \vec j + 2\vec k} \right)m$$
98. A transmission line is distortionless if
99. The intrinsic impedance η of a conducting medium for which σ = 58 Ms/m, µr = 1 at a frequency of 100 MHz is
100. A charge Q2 = 8.854 × 10-9 C is located in a vacuum at P2 (2, 3, 1). The force on Q2 due to a charge Q1 = 4π × 10-3 C at P1 (2, 2, 1) is:
(Note : All the coordinates are measured in Meters. ax, ay and az are unit vectors in X, Y and Z direction respectively.)
(Note : All the coordinates are measured in Meters. ax, ay and az are unit vectors in X, Y and Z direction respectively.)
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