Question 193Electricity & Electronics - Assistant Engineer

The correct answer is A) reluctance. Reluctance, also known as magnetic resistance, is the opposition to the establishment of magnetic lines of force in a magnetic circuit. It is the magnetic equivalent of electrical resistance, and it determines the amount of magnetic flux that will be produced in a magnetic circuit for a given magnetomotive force (MMF). Reluctance is a key factor in the design and analysis of magnetic circuits, as it helps determine the magnetic flux and the performance of magnetic devices. The other options are incorrect because: B) Inductance is the measure of the magnetic field produced by an electric current, not the opposition to the establishment of magnetic lines of force. C) Resistance is the opposition to the flow of electric current, not magnetic flux. D) Impedance is the combined effect of resistance and reactance in an alternating current (AC) circuit, which is not directly relevant to the concept of magnetic reluctance.