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Friday, 9 October

JEE Main Physics · Moving Charges and Magnetism

Magnetic Force Vector Calculation

Magnetic Force Vector Calculation (Moving Charges and Magnetism) was asked 3 times in 3 JEE Main shifts, 2020–2026, out of the 42 shifts Lumi analysed. 2 of the 3 had a numerical answer.

Times asked
3
in 3 shifts
Years
2020–2026
Usual format
Numerical value
Application
Pattern
Occasional
repeats across shifts

How it is asked

  • Magnetic force from vector cross product
  • Unknown component from perpendicular force

Difficulty

Easy 1Medium 2Hard 0

Where it sits

Chapter: Moving Charges and Magnetism. Topic: Lorentz Force, 20 questions over 13 ideas.

Other repeat ideas in this topic

Every time it came

All 3 questions

Newest first, each with its options and official answer.

  1. 2 Apr 2026, Shift 1 · Q481 μ1\ \muC charge moving with velocity v⃗=(i^−2j^+3k^)\vec v=\left(\hat i-2\hat j+3\hat k\right) m/s in the region of magnetic field…EasyNumerical value
  2. 5 Apr 2026, Shift 1 · Q49The charged particle moving in a uniform magnetic field of (3i^+2j^) T(3\hat{i} + 2\hat{j})\,\mathrm{T} has an acceleration…MediumNumerical value
  3. 8 Jan 2020, Shift 1 · Q12Proton with kinetic energy of 1 MeV moves from south to north. It gets an acceleration of 101210^{12} m/s2^2 by an applied magnetic field…MediumSingle correct