JEE Main Physics · Moving Charges and Magnetism
Ratio of Axial to Central Magnetic Field
Ratio of Axial to Central Magnetic Field (Moving Charges and Magnetism) was asked 3 times in 3 JEE Main shifts, 2022–2025, out of the 42 shifts Lumi analysed. 1 of the 3 had a numerical answer.
- Times asked
- 3
- in 3 shifts
- Years
- 2022–2025
- Usual format
- Single correct
- Calculation
- Pattern
- Comes in cycles
- repeats across shifts
How it is asked
- Axial to central field ratio
- Ratio of coil fields centre vs axis
Difficulty
Easy 2Medium 1Hard 0
Where it sits
Chapter: Moving Charges and Magnetism. Topic: Biot-Savart Law, 12 questions over 6 ideas.
Other repeat ideas in this topic
Every time it came
All 3 questions
Newest first, each with its options and official answer.
- 2 Apr 2025, Shift 1 · Q38Let be the magnitude of magnetic field at center of a circular coil of radius R carrying current I. Let be the magnitude of…EasySingle correct
- 8 Apr 2023, Shift 2 · Q59The ratio of magnetic field at the centre of a current carrying coil of radius to the magnetic field at distance 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