CBSE 2024 · Region 4 · Set 3 · Q6 · 1 mark
A coil of N turns is placed in a magnetic field $\displaystyle \overrightarrow{\mathrm{B}}$ such that $\displaystyle \overrightarrow{\mathrm{B}}$ is perpendicular to the plane of the coil. $\displaystyle \overrightarrow{\mathrm{B}}$ changes with time as $\displaystyle \mathrm{B}=\mathrm{B}_{0} \cos \left(\frac{2 \pi}{T} \mathrm{t}\right)$ where $\displaystyle T$ is time period. The magnitude of emf induced in the coil will be maximum at
Official answer
From CBSE’s own marking scheme for this paper.
(A)
$\displaystyle \mathrm{t}=\frac{\mathrm{nT}}{8}$
Electromagnetic InductionFaraday’s Law of InductionApplymcqmedium
More from Electromagnetic Induction
- Assertion: The mutual inductance between two coils is maximum when the coils are wound on each other. Reason…2024 · asked 3×
- In the process of charging of a capacitor, the current produced between the plates of the capacitor is:2023 · asked 3×
- A vertically held bar magnet is dropped along the axis of a copper ring having a cut as shown in the diagram.…2025 · asked 3×
- The direction of induced current in the loop abc is:2023 · asked 3×
- (i) Define self-inductance of a coil. Derive the expression for the energy required to build up a current I…2025 · asked 3×
- Two coils C 1 and C 2 are placed close to each other. The magnetic flux φ 2 linked with the coil C 2 varies…2023 · asked 3×
- Assertion: Induced emf produced in a coil will be more when the magnetic flux linked with the coil is more.…2026 · asked 3×
- (i) State Lenz's law and explain how this law is a consequence of conservation of energy principle. (ii) A…2025 · asked 3×
CBSE Class 12 Physics past-paper question from the 2024board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.