Electromagnetic Field Theory What is the value of magnetic vector potential due to an infinitesimally small current element, evaluated at infinite distance from it? Depends on strength of current element. Zero. Infinity. Unity. Depends on strength of current element. Zero. Infinity. Unity. 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 abω Bo sinω t. ab Bo cosω t. Bo ω sinω t. Zero. abω Bo sinω t. ab Bo cosω t. Bo ω sinω t. Zero. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory A point charge in space is attracted towards a dielectric material because of the dielectric hysteresis. all of above. maximisation of electrostatic flux. phenomenon of dielectric polarisation. dielectric hysteresis. all of above. maximisation of electrostatic flux. phenomenon of dielectric polarisation. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory The radiation pattern of loop antenna is Circle Cardoid or Limacon Elliptical Semicircle Circle Cardoid or Limacon Elliptical Semicircle ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory The minimum height of outer atmosphere is 150 km 400 km 100 km 200 km 150 km 400 km 100 km 200 km ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory Conductor is static and the field is varying then emf will be induced. This principle is called dynamically induced emf. none of these virtually induced emf. static induced emf. dynamically induced emf. none of these virtually induced emf. static induced emf. ANSWER DOWNLOAD EXAMIANS APP
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