CBSE 2025 · Region 4 · Set 1 · Q12 · 1 mark
A long straight wire is held vertically and carries a steady current in upward direction. The shape of magnetic field lines produced by the current-carrying wire are :
Official answer
From CBSE’s own marking scheme for this paper.
(C)
concentric horizonal circles around the wire.
Moving Charges and MagnetismMagnetic Field due to a Current Element, Biot-Savart LawRemembermcqeasy
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CBSE Class 12 Physics past-paper question from the 2025board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.