CBSE 2025 · Region 6 · Set 1 · Q3 · 1 mark
The value of magnetic field at point O in the given figure is :
Official answer
From CBSE’s own marking scheme for this paper.
(C)
$\displaystyle \frac{\mu_{0} \mathrm{I}}{4 \mathrm{R}}$
Moving Charges and MagnetismMagnetic Field due to a Current Element, Biot-Savart LawApplymcqmedium
More from Moving Charges and Magnetism
- A 2.0 cm segment of wire, carrying 5.0 A current in positive y-direction lies along y -axis, as shown in the…2024 · asked 3×
- Derive an expression for the magnetic field B, due to a circular coil of N turns, each of radius r carrying…2026 · asked 3×
- Assertion: A proton and an electron enter a uniform magnetic field B with the same momentum p such that p is…2024 · asked 3×
- (i) A particle of mass m and charge q is moving with a velocity v in a magnetic field B as shown in the…2024 · asked 3×
- Figure shows a narrow beam of electrons entering with a velocity of 3 × 10^7 m / s, symmetrically through the…2026 · asked 3×
- A 1 cm straight segment of a conductor carrying 1 A current in x direction lies symmetrically at origin of…2025 · asked 3×
- A rectangular loop carries a current of 1 A. A straight long wire carrying 2 A current is kept near the loop…2025 · asked 3×
- Assertion: Two long parallel wires, freely suspended and connected in series to a battery, move apart. Reason…2024 · asked 3×
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.