JEE Main 2024PhysicsAlternating CurrentEasyMCQ

JEE Main 2024 — Alternating Current Question with Solution

JEE Main 2024 (01 Feb Shift 2)

Question

A transformer has an efficiency of 80% and works at 10 V and 4 kW. If the secondary voltage is 240 V, then the current in the secondary coil is:

Choose an option

Show full solutionCorrect option: B
Correct answer
B13.33 A

Step-by-step explanation

Efficiency η=PoutputPinput=ESISEPIP

⇒0.8=240IS4000

⇒IS=3200240=13.33 A

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About this question

This is a previous-year question from JEE Main 2024, covering the Alternating Current chapter of Physics. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.