CUET · PHYSICS · PYQ PAPER 2025
A step-up transformer operates on a 220 V line and supplies a current of 2 A. The ratio of primary and secondary winding is 1 : 25. Assuming 100% efficiency, the output power of the transformer is:
- A 11000 W
- B 22000 W
- C 36000 W
- D 44000 W
Answer & Solution
Correct Answer
(A) 11000 W
Step-by-step Solution
Detailed explanation
\( V_s = V_p \times \frac{N_s}{N_p} \) \( V_s = 220 \, V \times \frac{25}{1} = 5500 \, V \) \( P_{out} = V_s \times I_s \) \( P_{out} = 5500 \, V \times 2 \, A = 11000 \, W \)
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