JEE Main · Physics · Electromagnetic Induction
Self-Inductance and Back EMF
JEE Main asked Self-Inductance and Back EMF 6 times in 6 of the 108 shifts Lumi analysed, in 2020, 2021, 2022, 2023 and 2024. It belongs to Inductance, in Electromagnetic Induction (Physics). The longest wait between two years asking it was 1 year. In 2024 it came in more than one shift of the same year.
Updated 2026-10-24
- Times asked
- 6
- in 6 shifts
- Years
- 5 of 8
- First asked
- 2020
- last in 2024
- Pattern
- Asked most years
- across the analysed shifts
Questions on this idea a shift, by year
2017–2026. Asked in 2020, 2021, 2022, 2023 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: 1 in 12 shifts · 2024: 2 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
Numerical value is the usual form. Skill tested: calculation.
- Self inductance from emf and current change
- Self-inductance from emf and current rate
Difficulty
3 of the 6 questions had a numerical answer.
Every question
All 6 questions
From the official JEE Main shift papers, newest first. Open one for the full question, the options and the official answer.
- 6 Apr 2024, Shift 2 · Q44In a coil, the current changes from A to A in 0.2 s and induces an emf of 0.1 V. The self inductance of the coil is :EasySingle correct
- 5 Apr 2024, Shift 2 · Q59The current in an inductor is given by where t is in second. The magnitude of induced emf produced in the inductor is 12 mV.…EasyNumerical value
- 15 Apr 2023, Shift 1 · Q48A 12 V battery connected to a coil of resistance 6 through a switch, drives a constant current in the circuit. The switch is…EasySingle correct
- 26 Jun 2022, Shift 1 · Q55A 10 , 20 mH coil carrying constant current is connected to a battery of 20 V through a switch. Now after switch is opened current…EasyNumerical value
- 24 Feb 2021, Shift 2 · Q11Figure shows a circuit that contains four identical resistors with resistance , two identical inductors with inductance…MediumDiagram basedHas a figure
- 9 Jan 2020, Shift 1 · Q24In a fluorescent lamp choke (a small transformer) 100 V of reverse voltage is produced when the choke current changes uniformly from 0.25…EasyNumerical value
Shifts: 9 Jan 2020, Shift 1, 24 Feb 2021, Shift 2, 26 Jun 2022, Shift 1, 15 Apr 2023, Shift 1, 5 Apr 2024, Shift 2, 6 Apr 2024, Shift 2.
Same topic
Other ideas in Inductance
Inductance has 14 ideas JEE Main has asked; 8 of them came up in more than one question. The 12 most asked are below.
- Energy Stored in Inductors7× · 2026
- Mutual Inductance of Concentric Square Loops2× · 2026
- Magnetic Energy Density2× · 2025
- Mutual Inductance of Concentric Square Loops2× · 2024
- Mutual Inductance of Coaxial Coils2× · 2023
- Current Continuity in Inductors2× · 2022
- Dimensional Analysis of Inductance2× · 2022
- Equivalent Circuit of a Non-Ideal Inductoronce · 2026
- Self-Inductance of a Solenoidonce · 2026
- Mutual Inductance Definitiononce · 2024
- Mutual Inductance of Concentric Circular Loopsonce · 2024
- Power Distribution in a Non-Ideal Inductoronce · 2023