Learn

Saturday, 31 October

JEE Main 2024 · PhysicsMultiple choiceSingle correctEasyCalculation

JEE Main 6 April 2024, Shift 1, Physics Q43

Question 43 of 90 in this shift, Physics question 13 of 30, Section A.

An element Δl=Δxi^\Delta l = \Delta x\hat{i} is placed at the origin and carries a large current II = 10A. The magnetic field on the yy-axis at a distance of 0.5m from the elements Δx\Delta x of 1cm length is :

The figure, in words

x and y axes; a small rectangular element of length Δx lying along the x-axis at the origin; point P on the y-axis at a distance 0.5 m above the element.
  1. (1)4×10−8T4\times10^{-8}TOfficial answer
  2. (2)8×10−8T8\times10^{-8}T
  3. (3)10×10−8T10\times10^{-8}T
  4. (4)12×10−8T12\times10^{-8}T

Official answer

Option 1

NTA final key.

Chapter
Moving Charges and Magnetism
Topic
Biot-Savart Law
Idea tested
Vector form of Biot-Savart Law

Same topic in other shifts

All Biot-Savart Law questions
  1. 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
  2. 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
  3. 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
  4. 2 Apr 2025, Shift 1 · Q38Let B1B_1 be the magnitude of magnetic field at center of a circular coil of radius R carrying current I. Let B2B_2 be the magnitude of…EasySingle correct
  5. 2 Apr 2025, Shift 2 · Q27Given a charge qq, current II and permeability of vacuum μ0\mu_0. Which of the following quantity has the dimension of momentum ?MediumSingle correct
  6. 3 Apr 2025, Shift 1 · Q48A loop ABCDA, carrying current I=12\mathrm{I} = 12 A, is placed in a plane, consists of two semi-circular segments of radius…MediumNumerical valueHas a figure

Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. This question needs a figure we do not reproduce; it is described in words above. Lumi analyses 108 of the 174 JEE Main shifts held from 2017 to 2026.