Electromagnetic Field Theory A sphere of radius with a uniform charge density ρv C/m3 shall have electric flux density at radius “r = a” equal to ρv/3 C/m2. aρv/4 C/m2. aρv/3 C/m2. aρv C/m2. ρv/3 C/m2. aρv/4 C/m2. aρv/3 C/m2. aρv C/m2. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory Conductor is varying and field is fixed then emf will be induced. This principle is called static induced emf. dynamically induced emf. None of these both A and B. static induced emf. dynamically induced emf. None of these both A and B. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory The field at any point on the axis of a current carrying coil will be parallel to axis. zero. perpendicular to the axis. at angle of 45° with the axis. parallel to axis. zero. perpendicular to the axis. at angle of 45° with the axis. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory In case of antenna the ratio of the power radiated in the desired direction to the power radiated in the opposite direction is known as Front to back ratio Transmission efficiency Loss coefficient None of these Front to back ratio Transmission efficiency Loss coefficient None of these ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory The work done by a force F = 4un - 3uy + 2uz N in giving a 1nC charge a displacement of (10 ux + 2uy - 7uz) m is 20 nj. 60 nj. 100 nj. 40 nj. 20 nj. 60 nj. 100 nj. 40 nj. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory The two windings of a transformer have an inductor of 2 H each. If mutual inductor between them is also 2 H, then it is a perfect transformer. transformer is an ideal transformer. turns ratio of the transformer is also two. none of these. it is a perfect transformer. transformer is an ideal transformer. turns ratio of the transformer is also two. none of these. ANSWER DOWNLOAD EXAMIANS APP
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