Electromagnetic Field Theory Two coils are coupled in such a way that the mutual inductance between them is 20 mH. If the inductances of the coils are 40 mH and 50 mH respectively, the coefficient of coupling is 0.477. 0.01. 0.447. 0.577. 0.477. 0.01. 0.447. 0.577. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory What is the value of total electric flux coming out of a closed surface? Equal to the surface charge density. Zero. Equal to total charge enclosed by the surface. Equal to volume change density. Equal to the surface charge density. Zero. Equal to total charge enclosed by the surface. Equal to volume change density. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory The energy stored in the magnetic field in a solenoid 10 cm long and 4 cm diameter wound with 2000 turns of wire carrying a current at 20 amp, is 12 joules. 24 joules. 15 joules. 30 joules. 12 joules. 24 joules. 15 joules. 30 joules. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory Skin depth is proportional to 1/√σ. √(σ). Permeability. Frequency. 1/√σ. √(σ). Permeability. Frequency. 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 60 nj. 40 nj. 100 nj. 20 nj. 60 nj. 40 nj. 100 nj. 20 nj. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory Poyniting vector has the dimensions Watt/metre. Watt × metre2. Watt × metre. Watts/metre2. Watt/metre. Watt × metre2. Watt × metre. Watts/metre2. ANSWER DOWNLOAD EXAMIANS APP
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