Electromagnetic Field Theory Coulombs law for the force between electric charges most closely resembles with Newtons law of gravitation. Gauss theorem. Newtons law of motion. Law of conservation of energy. Newtons law of gravitation. Gauss theorem. Newtons law of motion. Law of conservation of energy. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory The critical frequency of ‘F’ layer is greater than 30 MHz. False True False True ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory A rectangular loop in the x – z plane bounded by the lines x = 0, x = a, z = 0 and z = b is in a time varying magnetic field is given by B = B0 cosωt + ay. Where B0 is constant, ω is angular frequency and ay unit vector in the y direction. Now the emf induced in the loop is given by Zero. ab Bo cosω t. Bo ω sinω t. abω Bo sinω t. Zero. ab Bo cosω t. Bo ω sinω t. abω Bo sinω t. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory The magnitude of the induced emf in a conductor depends upon on the amount of flux linkage. amount of flux cut. flux density of the magnetic field. rate of change of flux linkage. amount of flux linkage. amount of flux cut. flux density of the magnetic field. rate of change of flux linkage. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory What is the value of skin depth as 100 Hz in a material having μr = 1.0 and & σ = 3.60 × 107 s/m 2.4 mm. 4 mm. 8.4 mm. 10 mm. 2.4 mm. 4 mm. 8.4 mm. 10 mm. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory A circular ring is carrying uniformly distributed charge q and a point charge – Q on the axis of the ring. The magnitude of dipole moment of the charge system is (Assume distance between centre of ring and point charge is d and radius of ring R) QR. Q√(R2 + d2). QR2/d. QD. QR. Q√(R2 + d2). QR2/d. QD. ANSWER DOWNLOAD EXAMIANS APP
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