A. R2/VK
B. R2IK2
C. R22!K2
D. R22/K
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A. R2/VK
B. R2IK2
C. R22!K2
D. R22/K
The correct answer is D. R22/K
The transformation ratio (K) of a transformer is the ratio of the primary winding’s voltage to the secondary winding’s voltage. This means that the primary winding voltage is K times the secondary winding voltage.
The equivalent secondary resistance referred to the primary is calculated by dividing the resistance of the secondary winding (R2) by the transformation ratio (K). This is because the primary winding voltage is K times the secondary winding voltage, so the resistance of the secondary winding must be divided by K to account for this difference in voltage.
The formula for equivalent secondary resistance referred to the primary is: R2/K
Therefore, R22/K is the correct answer.