The area of hysteresis loop of a material is equivalent to 250 Joule/m3. When 10 kg material is magnetised by an alternating field of 50Hz then energy lost in one hour will be if the density of material is 7.5 gm/cm³.
A. 6 × 10⁴ Joule
B. 6 × 10⁴ Erg
C. 3 × 10² Joule
D. 3 × 10² Erg
Answer:A
The area of hysteresis loop of a material is equivalent to 250 Joule/m3. When 10 kg material is magnetised by an alternating field of 50Hz then energy lost in one hour will be if the density of material is 7.5 gm/cm³.
A. 6 × 10⁴ Joule B. 6 × 10⁴ Erg C. 3 × 10² Joule D. 3 × 10² Erg