Electromagnetic Field Theory If the static magnetic flux density is B, then Divergence of B = J. Divergence of B = 0. Curl of B = J. Curl of B = 0. Divergence of B = J. Divergence of B = 0. Curl of B = J. Curl of B = 0. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory What is the value of total electric flux coming out of a closed surface? Equal to volume change density. Equal to the surface charge density. Zero. Equal to total charge enclosed by the surface. Equal to volume change density. Equal to the surface charge density. Zero. Equal to total charge enclosed by the surface. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory Ohm’s law in point from field theory can be expressed as J = E / σ. J = σE. V = IR. R = ρ × ( l / A). J = E / σ. J = σE. V = IR. R = ρ × ( l / A). ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory In case of antenna the ratio of the power radiated in the desired direction to the power radiated in the opposite direction is known as Transmission efficiency Loss coefficient None of these Front to back ratio Transmission efficiency Loss coefficient None of these Front to back ratio ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory An electric dipole of moment P is placed in front of a ground sphere. The change induced on the surface of the sphere is (Assume radius of sphere = R and distance from dipole to centre of sphere = d) Zero. PR/d. PR/d2. PR 2/d3. Zero. PR/d. PR/d2. PR 2/d3. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory A metal sphere with 1 m radius and a surface charge density of 10 coulombs/m2 is enclosed in a cube of 10 m side. The total outward electric displacement normal to the surface of the cube is 5 C. 10 C. 40π C. None of above. 5 C. 10 C. 40π C. None of above. ANSWER DOWNLOAD EXAMIANS APP
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