Electromagnetic Field Theory According to Coulomb’s law, the force of attraction or repulsion, between to electrical charges is inversely proportional to the square of the distance between them. directly proportional to the distance between them. inversely proportional to the distance between them. directly proportional to the square of the distance between them. inversely proportional to the square of the distance between them. directly proportional to the distance between them. inversely proportional to the distance between them. directly proportional to the square of the distance between them. 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 10π coulombs. 80π coulombs. none of these. 40π coulombs. 10π coulombs. 80π coulombs. none of these. 40π coulombs. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory The energy stored in the magnetic field in a solenoid 30 cm long and 3 cm diameter wound with 1000 turns of wire carrying a current at 10 amp, is 1.15 joule. 0.015 joule. 0.15 joule. 0.015 joule. 1.15 joule. 0.015 joule. 0.15 joule. 0.015 joule. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory The power gain of a half-wave dipole with respect to an isotropic radiator is 3 db 4.15 db 6 db 2.15 db 3 db 4.15 db 6 db 2.15 db ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory The magnetic field required to reduce the residual magnetism to zero is called Retentivity. Coercivity. Hysteresis. Saturation magnetism. Retentivity. Coercivity. Hysteresis. Saturation magnetism. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory Magnetic field intensity at centre of circular coil, of diameter 1 m and carrying a current of 2 A is 1 A/m. 2 A/m. 8 A/m. 4 A/m. 1 A/m. 2 A/m. 8 A/m. 4 A/m. ANSWER DOWNLOAD EXAMIANS APP
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