Electromagnetic Field Theory A plane wave in a homogeneous medium has E = 50 sin(108t + 2z) uy V/m. What is the direction of wave propagation y direction. – z direction. z direction. – y direction. y direction. – z direction. z direction. – y direction. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory Which statement does not say that electrostatic field is conservative? If is gradient of a scalar potential. The potential difference between two points is zero. The work done in a closed path inside the fields is zero. If the curl of E is identically zero. If is gradient of a scalar potential. The potential difference between two points is zero. The work done in a closed path inside the fields is zero. If the curl of E is identically zero. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory The work done by a force F = 4un - 3uy + 2uz N in giving a 1nC charge a displacement of (10 ux + 2uy - 7uz) m is 60 nj. 20 nj. 40 nj. 100 nj. 60 nj. 20 nj. 40 nj. 100 nj. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory Due to which of the following reasons a lightning conductor on top of a building is made into a pointed spike? Dust particles may not accumulate Charge per unit area becomes very high for lightening to discharge Rain drops may not collect None of these Dust particles may not accumulate Charge per unit area becomes very high for lightening to discharge Rain drops may not collect None of these ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory A long wire composed of a smooth round conductor runs above and parallel to the ground (assumed to be a large conducting plane). A high voltage exists between the conductor and the ground. The maximum electric stress occurs at lower surface of the conductor. midway between the conductor and ground. upper surface of the conductor. the ground surface. lower surface of the conductor. midway between the conductor and ground. upper surface of the conductor. the ground surface. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory What is the value of total electric flux coming out of a closed surface? Equal to the surface charge density. Equal to total charge enclosed by the surface. Zero. Equal to volume change density. Equal to the surface charge density. Equal to total charge enclosed by the surface. Zero. Equal to volume change density. ANSWER DOWNLOAD EXAMIANS APP
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