Physics · 2019
JEE Main · 10 April 2019, Shift 1 · Q21
A transformer consisting of 300 turns in the primary and 150 turns in the secondary gives output power of 2.2 kW. If the current in the secondary…
A transformer consisting of $\displaystyle 300$ turns in the primary and $\displaystyle 150$ turns in the secondary gives output power of $\displaystyle 2.2$ kW . If the current in the secondary coil is $\displaystyle 10$ A, then the input voltage and current in the primary coil are:
Official answer
(3)
$\displaystyle 440$ V and $\displaystyle 5$ A
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JEE Main 2019 Physics question, with the answer from NTA’s final answer key. Where our answers come from.