Electromagnetic Field Theory Ohm’s law in point from field theory can be expressed as J = σE. J = E / σ. V = IR. R = ρ × ( l / A). J = σE. J = E / σ. V = IR. R = ρ × ( l / A). ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory For DC voltage an inductor is virtually a open circuit. depends on magnitude of voltage. depends on polarity. short circuit. open circuit. depends on magnitude of voltage. depends on polarity. short circuit. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory The magnitude of force acting on a current carrying conductor placed in a magnetic field is independent of flux density. cross-sectional area of conductor. length of conductor. current flowing through the conductor. flux density. cross-sectional area of conductor. length of conductor. current flowing through the conductor. 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 24 joules. 15 joules. 12 joules. 30 joules. 24 joules. 15 joules. 12 joules. 30 joules. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory A loop is rotating about x-axis in a magnetic field, B = BO cos(ω + φ) ay. The voltage in the loop is Zero. Due to both rotating and transformer action. Due to rotating only. Due to transformer only. Zero. Due to both rotating and transformer action. Due to rotating only. Due to transformer only. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory Which of following is true for a purely inductive circuit ? Any capacitance even if present in the circuit will not be charged. Actual power of the circuit is zero. Reactive power of the circuit is zero. Apparent power of the circuit is zero. Any capacitance even if present in the circuit will not be charged. Actual power of the circuit is zero. Reactive power of the circuit is zero. Apparent power of the circuit is zero. ANSWER DOWNLOAD EXAMIANS APP
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