Electromagnetic Field Theory A magnetic vector potential is given by the expression A = (- cos x) (cos y) uz. The flux density at the origin is 0. 2 ux. – uy. – 2 ux. 0. 2 ux. – uy. – 2 ux. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory When a single turn coil rotates in a uniform magnetic field at a uniform speed, the induced emf will be pulsating. alternating. steady. none of these. pulsating. alternating. steady. none of these. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory What is the value of magnetic vector potential due to an infinitesimally small current element, evaluated at infinite distance from it? Infinity. Depends on strength of current element. Zero. Unity. Infinity. Depends on strength of current element. Zero. Unity. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory A square corner reflector is used in All of these Tv broadcast Point to point communication Radio astronomy All of these Tv broadcast Point to point communication Radio astronomy ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory A solid sphere made of insulating material has a radius R and has a total charge Q distributed uniformly in its volume. What is the magnitude of electric field intensity, E, at a distance r (o less than r less than R) inside the sphere QR/(4π εo r3). Q/(4 π εo r3). Qr/(4 π εo R3). 3 Qr/(4 π εo R3). QR/(4π εo r3). Q/(4 π εo r3). Qr/(4 π εo R3). 3 Qr/(4 π εo R3). 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 √ 2 V. 2 V. Zero. 1 V. √ 2 V. 2 V. Zero. 1 V. ANSWER DOWNLOAD EXAMIANS APP
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