JEE Mains · Physics · STD 12 -Electromagnetic induction
- JEE Mains 2024
- Hard
- Numerical
\(A\) power transmission line feeds input power at \(2\).\(3\) \(\mathrm{kV}\) to a step down transformer with its primary winding having \(3000\) turns. The output power is delivered at \(230 \mathrm{~V}\) by the transformer. The current in the primary of the transformer is \(5 \mathrm{~A}\) and its efficiency is \(90 \%\). The winding of transformer is made of copper. The output current of transformer is _______ \(A.\)
Pick an option to check your answer.
Answer & Solution
Correct Answer
(A) \(45\)
Step-by-step Solution
Detailed explanation
\(P_1=2300 \times 5\) watt
\(P_0=2300 \times 5 \times 0.9=230 \times I_2\)
\(I_2=45 A\)
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