A step-down transformer reduces the voltage of a transmission line from 2200 V to 220 V…
Physics · NEET · NTA Exams — Electromagnetic Induction and Alternating Currents
A step-down transformer reduces the voltage of a transmission line from 2200 V to 220 V. The power delivered by it is 880 W and its efficiency is 88%. The input current is
- 4.65 mA
- 0.045 A
- 0.45 A
- 4.65 A
Answer
(C) 0.45 A
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