A transformer has an efficiency of 80%.

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Target Exam

CUET

Subject

Physics

Chapter

Alternating Current

Question:

A transformer has an efficiency of 80%. It works at 3 kW and 120 V. If the secondary voltage is 240 V, what will be the secondary current?

Options:

2.5 A

12.5 A

25 A

10 A

Correct Answer:

10 A

Explanation:

The correct answer is Option (4) → 10 A