1. Tardigrade
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  3. Physics
  4. The area of hysteresis loop of a material is equivalent to 250 J / m 3. When 10 kg material is magnestized by an alternating field of 50 Hz, then energy lost in one hour will be β joule. Find (β/1000). (Density of material is 7.5 g / cm 3 )

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Q. The area of hysteresis loop of a material is equivalent to $250\, J / m ^{3}$. When $10 \,kg$ material is magnestized by an alternating field of $50 \,Hz$, then energy lost in one hour will be $\beta$ joule. Find $\frac{\beta}{1000}$. (Density of material is $7.5 \,g / cm ^{3}$ )

Magnetism and Matter

Solution:

Energy lost in $1$ hour
$=$ Area $\times$ Volume $\times$ Time $\times$ Frequency
$=\frac{250 \times 10 \times 3600 \times 50}{7500}$
$=6 \times 10^{4} \,J$