Electromagnetic Field Theory Ohm’s law in point from field theory can be expressed as R = ρ × ( l / A). V = IR. J = σE. J = E / σ. R = ρ × ( l / A). V = IR. J = σE. J = E / σ. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory The property of the coil by which a counter emf is induced in it when the current through the coil changes is known as self inductance. mutual inductance. capacitance. series aiding inductance. self inductance. mutual inductance. capacitance. series aiding inductance. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory A conductor of length 100 cm moves at right angles to a magnetic field of flux density 1.5 Wb/m2 with a velocity of 50 m/s. The induced emf in the conductor will be 150 V. 75 V. 50 V. 37.5 V. 150 V. 75 V. 50 V. 37.5 V. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory For an inductor, current is proportional to both (A) and (B). voltage across the inductor. magnetic field. none of them. both (A) and (B). voltage across the inductor. magnetic field. none of them. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory The effective reactance of an inductive coil decreases because of stray capacitance as the frequency increases. remains same irrespective of the frequency. increases because of stray capacitance as the frequency increases. none of these. decreases because of stray capacitance as the frequency increases. remains same irrespective of the frequency. increases because of stray capacitance as the frequency increases. none of these. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory Which of this statement is not characteristic of a static magnetic field it is conservative. it has no sink or sources. it is solenoidal. magnetic flux lines are always closed. it is conservative. it has no sink or sources. it is solenoidal. magnetic flux lines are always closed. ANSWER DOWNLOAD EXAMIANS APP
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