JEE Main Physics · Moving Charges and Magnetism

Biot-Savart Law in JEE Main

Name: Biot-Savart Law: JEE Main previous year questions
Creator: Lumi

Biot-Savart Law (Physics, Moving Charges and Magnetism) came 12 times in 12 of the 42 JEE Main shifts Lumi analysed, across 6 distinct ideas. 9 of them came in 2024–26; it was last asked in 2026.

Questions: 12; in 12 shifts
Ideas asked: 6; 4 asked more than once
Numerical answer: 5; 42% of its questions
Pattern: Asked most years; last asked 2026

Questions each year

In the shifts Lumi analysed for each year.

Difficulty and format

Easy 4Medium 7Hard 1

Format

Single correct6 Q
Numerical value5 Q
Diagram based1 Q

Ideas inside the topic

6 ideas

Ratio of Axial to Central Magnetic Field3 Q
Superposition of magnetic fields3 Q
Field at center of circular arc2 Q
Field at Center of Regular Polygon2 Q
Field of an N-Turn Flat Coil1 Q
Dimensions of Permeability1 Q

Where it sits

Part of Moving Charges and Magnetism, which had 56 questions in all. Biot-Savart Law accounts for 21% of them. In Lumi's JEE taxonomy it belongs to Magnetism.

Some questions sit in other chapters too: Units and Measurements.

Every question

All 12 Biot-Savart Law questions

Newest first, each with its options and official answer.

2 Apr 2026, Shift 1 · Q39Two identical long current carrying wires are bent into the shapes shown in the following figures. If the magnitude of magnetic fields at…MediumSingle correctHas a figure
6 Apr 2026, Shift 1 · Q42A small cube of side 1 mm is placed at the centre of a circular loop of radius 10 cm carrying a current of 2 A. The magnetic energy stored…MediumSingle correct
6 Apr 2026, Shift 2 · Q38A current of 30 A each flows in opposite directions in two conducting wires, placed parallel to each other at a distance of 8 cm. The…EasySingle correct
2 Apr 2025, Shift 1 · Q38Let $B_1$ be the magnitude of magnetic field at center of a circular coil of radius R carrying current I. Let $B_2$ be the magnitude of…EasySingle correct
2 Apr 2025, Shift 2 · Q27Given a charge $q$ , current $I$ and permeability of vacuum $\mu_0$ . Which of the following quantity has the dimension of momentum ?MediumSingle correct
3 Apr 2025, Shift 1 · Q48A loop ABCDA, carrying current $\mathrm{I} = 12$ A, is placed in a plane, consists of two semi-circular segments of radius…MediumNumerical valueHas a figure
8 Apr 2025, Shift 2 · Q39Figure shows a current carrying square loop ABCD of edge length is 'a' lying in a plane. If the resistance of the ABC part is r and that…HardDiagram basedHas a figure
30 Jan 2024, Shift 2 · Q57The current of 5A flows in a square loop of sides $1\ m$ is placed in air. The magnetic field at the centre of the loop is…EasyNumerical value
31 Jan 2024, Shift 2 · Q57Two circular coils $P$ and $Q$ of 100 turns each have same radius of $\pi$ cm. The currents in $P$ and $R$ are $1A$ and $2A$ respectively.…MediumNumerical value
6 Apr 2023, Shift 1 · Q57Two identical circular wires of radius 20 cm and carrying current $\sqrt2$ A are placed in perpendicular planes as shown in figure. The…MediumNumerical valueHas a figure
8 Apr 2023, Shift 2 · Q59The ratio of magnetic field at the centre of a current carrying coil of radius $r$ to the magnetic field at distance $r$ from the centre…MediumNumerical value
24 Jun 2022, Shift 1 · Q49The magnetic field at the centre of a circular coil of radius r, due to current I flowing through it, is B. The magnetic field at a point…EasySingle correct