Electromagnetic Field Theory Which of the following represents ohms law J = σE All of these I = GV V = RI J = σE All of these I = GV V = RI ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory A metal surface with 1 meter radius and surface charge density of 20 coulombs / m2 is enclosed in a 10 m side cube. The total outward electric displacement normal to the surface of the cube is 80π coulombs. none of these. 10π coulombs. 40π coulombs. 80π coulombs. none of these. 10π coulombs. 40π coulombs. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory For an inductor, current is proportional to both (A) and (B). magnetic field. none of them. voltage across the inductor. both (A) and (B). magnetic field. none of them. voltage across the inductor. 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? Rain drops may not collect Charge per unit area becomes very high for lightening to discharge Dust particles may not accumulate None of these Rain drops may not collect Charge per unit area becomes very high for lightening to discharge Dust particles may not accumulate None of these ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory A conductor is rotating with in a magnetic field. At which of the positions do the peak voltages occur? At an angle of 45° to the axis of the magnetic field. Anywhere. At right angles to the axis of the magnetic field. Along the axis of the magnetic field. At an angle of 45° to the axis of the magnetic field. Anywhere. At right angles to the axis of the magnetic field. Along the axis of the magnetic field. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory A Yagi antenna has a driven antenna With a reflector and one or more directors With a reflector With one or more directors Only With a reflector and one or more directors With a reflector With one or more directors Only ANSWER DOWNLOAD EXAMIANS APP
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