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GATE 2019: Electromagnetics Quiz 4

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Question 1

Magnetic flux density

and magnetic vector potential

are related by

Question 2

The electric field vector in free space is given by
= 10cos(10⁹t+z) V/m
The displacement current density vector is given by

Question 3

Magnetic field intensity is given by H = 2 cos (2 x 10 ⁹ t – ky) a_z A/m in air medium. What must be the wave number k for this EM wave

Question 4

What will be the magnetic field at a distance R = 5m from the center of a uniformly long wire with radius r = 1 m, carrying uniform current with current density 10 A/m²?

Question 5

Consider a straight conductor of length of 2m carrying a current 10 A in +Z direction. If the conductor is placed in a field of $Description: E:\Gate\Gate-EC\04_Elctromgntic_BL-done_files\image110.png$ = $Description: E:\Gate\Gate-EC\04_Elctromgntic_BL-done_files\image111.png$ ,then the force per unit length on the conductor is