Electromagnetic Field Theory An insulated metal sphere of 20 cm diameter is charged by rubbing with charges 2 × 10-8 C. Potential developed will be 900 V. 200 V. 1800 V. 0 V. 900 V. 200 V. 1800 V. 0 V. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory A negative point charge q = - 40 nC is moving with velocity of 6 × 106 m/s in a direction specited by unit vector uy + 0.6 uz. Find the magnitude of force vector on the moving particle by the field B = 2 ux + 3 uy + 5 uz mT and E = 2 ux - 3 uy + 5 uz KV/m 1440 μN. 1144 μN. 144 μN. 244 μN. 1440 μN. 1144 μN. 144 μN. 244 μN. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory In H-plane metal plate lens the travelling wave front is Neither accelerated nor retarded Retarded Accelerated Totally retarded Neither accelerated nor retarded Retarded Accelerated Totally retarded 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? 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 Dust particles may not accumulate Charge per unit area becomes very high for lightening to discharge Rain drops may not collect ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory Which antenna is a wideband antenna? Hertz antenna None of these Marconi antenna Folded dipole Hertz antenna None of these Marconi antenna Folded dipole ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory The attenuation in waveguide above to cut off frequency Very low Zero Very high Infinite Very low Zero Very high Infinite ANSWER DOWNLOAD EXAMIANS APP