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Which mechanism causes the decrease in back EMF generated when a transformer core reaches saturation?

A)Increased magnetic domain alignment
B)Limited magnetic flux density
C)Enhanced inductive reactance coupling
D)Reduced core hysteresis losses

💡 Explanation

The decrease results from core saturation because the **magnetic flux density** in the core is limited by its material properties; therefore, further increase of current does not yield a proportional increase in magnetic field, rather than inducing higher back EMF.

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