निम्नलिखित कथनों के लिए सत्य या असत्य बताएं। 1. एक टॉरॉइडल चुंबक (Toroidal magnet) में कोई वायु अंतराल (Air gap) नहीं होता है। 2. mmf (Magnetomotive force) का मात्रक Wb / Ampere है।

In a series magnetic circuit, if H is the magnetizing force and l is the length, then the total ampere-turns (AT) of a composite magnetic path is calculated by which relation?

Any flux which completes its path through the air or the medium surrounding the magnetic circuit instead of completing it through the core and air gap is called: