Electromagnetic Field Theory When the phase velocity of an EM wave depends on frequency in any medium the phenomenon is called Polarisation Dispersion Absorption Scattering Polarisation Dispersion Absorption Scattering ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory Voltage applied across a dielectric produces an electrostatic field 50 times greater than air. The dielectric constant of the dielectric will be 50. 20. 10. 5. 50. 20. 10. 5. 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. 4 A/m. 2 A/m. 8 A/m. 1 A/m. 4 A/m. 2 A/m. 8 A/m. 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? Charge per unit area becomes very high for lightening to discharge Rain drops may not collect Dust particles may not accumulate None of these Charge per unit area becomes very high for lightening to discharge Rain drops may not collect Dust particles may not accumulate None of these ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory A magnetic field B = 5 × 10-2 uz T exerts a force on 0.02 m conductor along the x-axis. The conductor carried a current of 5 mA in the – ux direction. What force must be applied to the conductor to hold it in position - 5 × 10-5 uy N. 5 × 10-5 ux N. 5 × 10-5 uy N. 5 × 10-5 uz N. - 5 × 10-5 uy N. 5 × 10-5 ux N. 5 × 10-5 uy N. 5 × 10-5 uz N. ANSWER DOWNLOAD EXAMIANS APP
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. inversely proportional to the distance between them. directly 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. inversely proportional to the distance between them. directly proportional to the distance between them. directly proportional to the square of the distance between them. ANSWER DOWNLOAD EXAMIANS APP
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