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Physics · 2025 · 1 mark
CBSE 2025 · Region 2 · Set 1 · Q7
A transformer is connected to a 200 V ac source. The transformer supplies 3000 V to a device. If the number of turns in the primary coil is 450, then…
A transformer is connected to a $\displaystyle 200$ V ac source. The transformer supplies $\displaystyle 3000$ V to a device. If the number of turns in the primary coil is $\displaystyle 450$, then the number of turns in its secondary coil is-
Official answer
(D)
$\displaystyle 6750$
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CBSE Class 12 Physics past-paper question from the 2025 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.