JEE Main · Physics · Current Electricity
Wheatstone Bridge: JEE Main previous year questions
26 questions in the 108 JEE Main shifts Lumi analysed, in 8 of 8 years. Pattern: Asked most years. 10 came in 2024–26. Here is how it is asked and which ideas come back.
- Questions
- 26
- in 24 of 108 shifts
- Years asked
- 8/8
- last asked 2026
- Weighted estimate
- 0.2
- model; history: 0.3 a shift on average, typically 0.1–0.4
Key findings
- 01
Asked in 8 of 8 years with analysed shifts and in 24 of 108 shifts: 26 questions, #122 of 196 topics. It came in every year with analysed shifts.
- 02
56% of its questions since 2020 tested an idea no earlier year had asked; 5 repeated an idea from the year before.
- 03
The most repeated idea is Meter Bridge Principles, asked 7 times in 7 shifts (2020, 2021, 2022, 2024), most often as “meter bridge balance after wire change”.
- 04
JEE Main has asked 12 of the 56 ideas in this topic; 40 have never been asked, directly or inside another question.
- 05
Mostly asked as numerical value (46%); 46% need a numerical answer, 31% are easy and 4% hard.
- 06
The skill tested most is calculation (50%), then multi-step (35%).
Questions a shift, year by year
Out of the 25 Physics questions in a shift. Years differ in how many shifts Lumi analysed, so each year is scaled to one shift.
Raw count: 2017: 1 in 1 shift · 2020: 4 in 12 shifts · 2021: 2 in 24 shifts · 2022: 7 in 24 shifts · 2023: 2 in 12 shifts · 2024: 8 in 18 shifts · 2025: 1 in 8 shifts · 2026: 1 in 9 shifts.
- Up to 2023
- 0.3
- a shift, of 25
- Since 2024
- 0.2
- -0.1
- Usual gap
- 1.3 yrs
- between years asking it
- Shifts with it
- 24/108
- 22% of analysed shifts
How it is asked
Difficulty, format and skill
Across all 26 questions on Wheatstone Bridge since 2017.
Difficulty
QUESTIONS- Easy8 · 31%
- Medium17 · 65%
- Hard1 · 4%
Format
SHARE- Numerical value · 12 Q46%
- Single correct · 10 Q38%
- Diagram based · 4 Q15%
Skill tested
SHARE- Calculation · 13 Q50%
- Multi-step · 9 Q35%
- Conceptual · 4 Q15%
Repeats
New idea, or one asked before?
Each column is a year. Blue questions tested an idea no earlier year had asked; navy ones went back to an idea from an earlier year. 2017 is the first year, so everything in it counts as new. Heights are question counts, and Lumi analysed 1 to 24 shifts a year, so compare the split inside a column rather than heights across years.
- Idea asked for the first time
- Idea asked in an earlier year
Coverage of the topic
JEE Main has asked 12 of the 56 ideas in this topic. 40 have never been asked yet.
- Asked directly12 · 21%
- Touched inside another question4 · 7%
- Never asked40 · 71%
Ideas come from Lumi’s JEE syllabus map. A never-asked idea is not a safe skip: across all of JEE Main, 22% of questions since 2024 tested an idea no earlier year had asked.
Drill down
Chapter, idea, question
Every idea JEE Main tested in this topic, with its eight years. Open one to read the questions.
9 ideas inside
Squares are the 8 years with analysed shifts, 2017 to 2026. A number is the questions that year when there is more than one; the shade is scaled to one shift, so a year with more analysed shifts (1 to 24 a year) does not look darker. Share is of the level above.
Ideas
Every idea inside this topic
12 different ideas were tested; 4 came more than once.
meter bridge balance after wire change
Numerical value · 7 shifts · 5 numericalgalvanometer resistance from shunt and series data
Single correct · 4 shifts · 1 numericalpotential difference across bridge nodes
Diagram based · 4 shifts · 2 numericalresistance to balance wheatstone network
Numerical value · 3 shifts · 2 numericalequivalent resistance of symmetric wire network
Diagram based · 1 shiftgalvanometer resistance from deflection change with shunt
Single correct · 1 shiftresistivity from meter bridge balance
Single correct · 1 shiftenergy stored in bridge capacitor
Numerical value · 1 shift · 1 numericalcurrent from network with balanced bridge
Diagram based · 1 shiftmethod to measure galvanometer resistance
Single correct · 1 shiftunknown resistance from meter bridge with end correction
Numerical value · 1 shift · 1 numericalfalse statement selection on bridge circuits
Single correct · 1 shift
| Idea | Years asked | Times | Shifts | Format | Numerical |
|---|---|---|---|---|---|
| Meter Bridge Principlesmeter bridge balance after wire change | 7 | 7 | Numerical valueCalculation | 5 | |
| Shunting Galvanometer for Protectiongalvanometer resistance from shunt and series data | 4 | 4 | Single correctCalculation | 1 | |
| Unbalanced Bridge Analysispotential difference across bridge nodes | 4 | 4 | Diagram basedCalculation | 2 | |
| Balanced Bridge Equationresistance to balance wheatstone network | 3 | 3 | Numerical valueMulti-step | 2 | |
| Hidden Wheatstone Bridges in Complex Networksequivalent resistance of symmetric wire network | 1 | 1 | Diagram basedMulti-step | – | |
| Effect of Shunting the Galvanometergalvanometer resistance from deflection change with shunt | 1 | 1 | Single correctCalculation | – | |
| Resistivity Calculation via Meter Bridgeresistivity from meter bridge balance | 1 | 1 | Single correctMulti-step | – | |
| DC Bridge with Capacitorsenergy stored in bridge capacitor | 1 | 1 | Numerical valueMulti-step | 1 | |
| Equivalent Resistance of Balanced Bridgecurrent from network with balanced bridge | 1 | 1 | Diagram basedCalculation | – | |
| Kelvin's Method for Galvanometer Resistancemethod to measure galvanometer resistance | 1 | 1 | Single correctConceptual | – | |
| Meter Bridge End Correctionsunknown resistance from meter bridge with end correction | 1 | 1 | Numerical valueCalculation | 1 | |
| Battery and Galvanometer Interchangeabilityfalse statement selection on bridge circuits | 1 | 1 | Single correctConceptual | – |
Times and shifts count every analysed shift. Across JEE Main, 78% of questions since 2024 went back to an idea an earlier year had asked; the rest were new. All repeated ideas
Every question
Wheatstone Bridge questions, year by year
The opening words of each question as it appeared in the official paper, with the idea it tested. Open one for its options and the official answer.
JEE Main 20261 question in 1 shift
- 6 Apr, Shift 2Q48A moving coil of galvanometer when shunted with 2 resistance gives a full scale deflection for a current of 500 mA. When a…
Idea: Shunting Galvanometer for Protection
MediumNumerical value
JEE Main 20251 question in 1 shift
- 7 Apr, Shift 1Q36A wire of resistance R is bent into a triangular pyramid as shown in figure with each segment having same length. The resistance between…
Idea: Hidden Wheatstone Bridges in Complex Networks
New ideaMediumDiagram based · figure
JEE Main 20248 questions in 7 shifts
- 5 Apr, Shift 2Q46A galvanometer of resistance when connected in series with measures a voltage of upto 10 V. The value of…
Idea: Shunting Galvanometer for Protection
New ideaMediumSingle correct - 6 Apr, Shift 1Q40The value of unknown resistance () for which the potential difference between and will be zero in the arrangement shown, is :
Idea: Balanced Bridge Equation
MediumSingle correct · figure - 9 Apr, Shift 1Q50A galvanometer has a coil of resistance with a full scale deflection at A. The value of resistance to be added to…
Idea: Shunting Galvanometer for Protection
New ideaEasySingle correct - 1 Feb, Shift 2Q50In a metre-bridge when a resistance in the left gap is and unknown resistance in the right gap, the balance length is found to…
Idea: Meter Bridge Principles
MediumSingle correct - 27 Jan, Shift 1Q50A wire of length 10 cm and radius m is connected across the right gap of a meter bridge. When a resistance of 4.5…
Idea: Resistivity Calculation via Meter Bridge
New ideaMediumSingle correct - 29 Jan, Shift 1Q42A galvanometer having coil resistance shows a full scale deflection for a current of 3mA. For it to measure a current of 8A,…
Idea: Shunting Galvanometer for Protection
New ideaEasySingle correct - 29 Jan, Shift 1Q50The deflection in moving coil galvanometer falls from 25 divisions to 5 division when a shunt of is applied. The resistance…
Idea: Effect of Shunting the Galvanometer
New ideaMediumSingle correct - 31 Jan, Shift 2Q49The resistance per centimeter of a meter bridge wire is , with resistance in left gap. Balancing length from left end is at…
Idea: Meter Bridge Principles
MediumSingle correct
JEE Main 20232 questions in 2 shifts
- 13 Apr, Shift 2Q56In the circuit shown, the energy stored in the capacitor is J. The value of n is ______.
Idea: DC Bridge with Capacitors
New ideaMediumNumerical value · figure - 15 Apr, Shift 1Q60A network of four resistances is connected to 9 V battery, as shown in figure. The magnitude of voltage difference between the points A…
Idea: Unbalanced Bridge Analysis
MediumNumerical value · figure
JEE Main 20227 questions in 6 shifts
- 26 Jul, Shift 1Q56Resistances are connected in a meter bridge circuit as shown in the figure. The balancing length is 40 cm. Now an unknown resistance…
Idea: Meter Bridge Principles
Asked the year beforeMediumNumerical value · figure - 26 Jul, Shift 2Q44A battery of is connected to the circuit as shown below. The current drawn from the battery is :
Idea: Equivalent Resistance of Balanced Bridge
New ideaEasyDiagram based · figure - 27 Jul, Shift 1Q51In a meter bridge experiment, for measuring unknown resistance 'S', the null point is obtained at a distance 30 cm from the left side as…
Idea: Meter Bridge Principles
Asked the year beforeEasyNumerical value · figure - 27 Jul, Shift 2Q52In the given figure of meter bridge experiment, the balancing length AC corresponding to null deflection of the galvanometer is 40 cm. The…
Idea: Meter Bridge Principles
Asked the year beforeMediumNumerical value · figure - 25 Jun, Shift 1Q50A teacher in his physics laboratory allotted an experiment to determine the resistance (G) of a galvanometer. Students took the…
Idea: Kelvin's Method for Galvanometer Resistance
New ideaMediumSingle correct - 28 Jun, Shift 1Q52A meter bridge setup is shown in the figure. It is used to determine an unknown resistance R using a given resistor of 15 . The…
Idea: Meter Bridge End Corrections
New ideaMediumNumerical value · figure - 28 Jun, Shift 1Q53Current measured by the ammeter (A) in the reported circuit when no current flows through 10 resistance, will be __________ A.
Idea: Balanced Bridge Equation
MediumNumerical value · figure
JEE Main 20212 questions in 2 shifts
- 17 Mar, Shift 2Q16The four arms of a Wheatstone bridge have resistances as shown in the figure. A galvanometer of 15 resistance is connected across…
Idea: Unbalanced Bridge Analysis
Asked the year beforeHardDiagram based · figure - 18 Mar, Shift 2Q26Consider a 72 cm long wire AB as shown in the figure. The galvanometer jockey is placed at P on AB at a distance cm from A. The…
Idea: Meter Bridge Principles
Asked the year beforeEasyNumerical value · figure
JEE Main 20204 questions in 4 shifts
- 8 Jan, Shift 1Q24Four resistances of 15 , 12 , 4 and 10 respectively in cyclic order to form Wheatstone's network. The…
Idea: Balanced Bridge Equation
New ideaEasyNumerical value - 9 Jan, Shift 1Q20In the given circuit diagram, a wire is joining points B and D. The current in this wire is :
Idea: Unbalanced Bridge Analysis
New ideaMediumDiagram based · figure - 9 Jan, Shift 2Q23In a meter bridge experiment S is a standard resistance. R is a resistance wire. It is found that balancing length is cm. If R is…
Idea: Meter Bridge Principles
New ideaEasyNumerical value · figure - 4 Sep, Shift 2Q23Four resistances 40 , 60 , 90 and 110 make the arms of a quadrilateral ABCD. Across AC is a battery of…
Idea: Unbalanced Bridge Analysis
New ideaEasyNumerical value · figure
JEE Main 20171 question in 1 shift
- 2 Apr (offline)Q29Which of the following statements is **false** ?
Idea: Battery and Galvanometer Interchangeability
MediumSingle correct
Questions from the official JEE Main Paper 1 shifts published by NTA (CBSE for 2017). Questions NTA dropped are left out. Topic and idea tags, counts and notes are Lumi’s.