Question

As the magnetic flux density increases, the reluctance _____________

(a) Increases

(b) Decreases

(c) Remains the same

(d) Becomes zero

I have been asked this question by my college professor while I was bunking the class.

This intriguing question originated from Reluctance topic in chapter Simple Magnetic Circuits of Basic Electrical Engineering

Answer 1

Right option is (b) Decreases

The explanation: Reluctance is inversely proportional to the magnetic flux density, hence as magnetic flux density increases, reluctance decreases.