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. 40π coulombs. 10π coulombs. none of these. 80π coulombs. 40π coulombs. 10π coulombs. none of these. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory The useful magnetic flux obtainable from any closed surface is Constant Both A and B None of these Unity Constant Both A and B None of these Unity ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory Two point charges (Q and – Q) are situated at the vertex of the square. If potential at another vertex is 2 V, so potential at opposite vertex (diagonally) is Zero. √ 2 V. 1 V. 2 V. Zero. √ 2 V. 1 V. 2 V. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory Which of following is true for a purely inductive circuit ? Reactive power of the circuit is zero. Apparent power of the circuit is zero. Any capacitance even if present in the circuit will not be charged. Actual power of the circuit is zero. Reactive power of the circuit is zero. Apparent power of the circuit is zero. Any capacitance even if present in the circuit will not be charged. Actual power of the circuit is zero. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory If n is the polarization vector and k is the direction of propagation plane electromagnetic wave, then n = - k. n. k = 0. n = K. n × k = 0. n = - k. n. k = 0. n = K. n × k = 0. 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 0.015 joule. 0.15 joule. 1.15 joule. 0.015 joule. 0.015 joule. 0.15 joule. 1.15 joule. 0.015 joule. ANSWER DOWNLOAD EXAMIANS APP
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