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Friday, 9 October

JEE Main 2024 · PhysicsNumerical answerNumerical valueEasyCalculation

JEE Main 30 January 2024, Shift 2, Physics Q58

Question 58 of 90 in this shift, Physics question 28 of 30, Section B.

A power transmission line feeds input power at 2.3kV2.3kV to a step down transformer with its primary winding having 3000 turns. The output power is delivered at 230V230V by the transformer. The current in the primary of the transformer is 5A5A and its efficiency is 90%. The winding of transformer is made of copper. The output current of transformer is ________ AA.

Official answer

45

NTA final key.

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Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 42 of the 174 JEE Main shifts held from 2017 to 2026.