JEE Main · Physics · Moving Charges and Magnetism
Field Inside Thick Wire
JEE Main asked Field Inside Thick Wire 4 times in 4 of the 108 shifts Lumi analysed, in 2020, 2021, 2022 and 2024. It belongs to Ampere's Circuital Law, in Moving Charges and Magnetism (Physics). The longest wait between two years asking it was 2 years.
Updated 2026-10-24
- Times asked
- 4
- in 4 shifts
- Years
- 4 of 8
- First asked
- 2020
- last in 2024
- Pattern
- Comes in cycles
- across the analysed shifts
Questions on this idea a shift, by year
2017–2026. Asked in 2020, 2021, 2022 and 2024. Years differ in how many shifts Lumi analysed, so each year is scaled to one shift of 25 Physics questions.
Raw count: 2017: 0 in 1 shift · 2020: 1 in 12 shifts · 2021: 1 in 24 shifts · 2022: 1 in 24 shifts · 2023: 0 in 12 shifts · 2024: 1 in 18 shifts · 2025: 0 in 8 shifts · 2026: 0 in 9 shifts.
Shift by shift
Each square is one analysed shift, in date order. Open a filled one for that paper.
How JEE Main framed it
Single correct is the usual form. Skill tested: calculation.
- Ratio of field inside and outside thick wire
- Variation of field inside thick wire
Difficulty
Every question was multiple choice.
Every question
All 4 questions
From the official JEE Main shift papers, newest first. Open one for the full question, the options and the official answer.
- 8 Apr 2024, Shift 2 · Q42A long straight wire of radius a carries a steady current I. The current is uniformly distributed across its cross section. The ratio of…MediumSingle correct
- 25 Jun 2022, Shift 1 · Q40A long straight wire with a circular cross-section having radius R, is carrying a steady current I. The current I is uniformly distributed…EasySingle correct
- 27 Aug 2021, Shift 2 · Q11A coaxial cable consists of an inner wire of radius ‘a’ surrounded by an outer shell of inner and outer radii ‘b’ and ‘c’ respectively.…MediumSingle correct
- 9 Jan 2020, Shift 1 · Q12A long, straight wire of radius a carries a current distributed uniformly over its cross-section. The ratio of the magnetic fields due to…EasySingle correct
Shifts: 9 Jan 2020, Shift 1, 27 Aug 2021, Shift 2, 25 Jun 2022, Shift 1, 8 Apr 2024, Shift 2.
Same topic
Other ideas in Ampere's Circuital Law
Ampere's Circuital Law has 8 ideas JEE Main has asked; 2 of them came up in more than one question.
- Ideal Infinite Solenoid5× · 2024
- Ampere's Law for Magnetic Intensity (H)once · 2026
- Coaxial Cable Magnetic Fieldsonce · 2024
- B vs r Graph for Solid Cylinderonce · 2023
- Magnetic Field of a Hollow Cylindrical Pipeonce · 2022
- Non-Uniform Current Density in Cylindersonce · 2021
- Toroidal Magnetic Fieldonce · 2021