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Wheatstone Bridge, Metre Bridge and Potentiometer for JEE: 42 solved questions

Real JEE paper questions on wheatstone bridge, metre bridge and potentiometer, part of current electricity. Each opens with the options, the correct answer and a step-by-step solution. Papers run from 2004 to 2026. No sign-in needed to read them.

What this topic asks

• Metre bridge — 22 questions
• Wheatstone bridge — 17 questions
• Potentiometer — 3 questions

All 42 questions with solutions

• The equivalent resistance between A and B of the network shown in figure [Figure: from A, resistor R goes to… JEE Main 1st Feb 1st Shift 2023
• The total length of potentiometer wire AB is 50 cm in the arrangement as shown in figure. If P is the point w… JEE Main 21st Jan 2nd Shift 2026
• A meter bridge with two resistances R₁ and R₂ as shown in figure was balanced (null point) at 40 cm from the… JEE Main 22nd Jan 1st Shift 2026
• To compare EMF of two cells using potentiometer the balancing lengths obtained are 200 cm and 150 cm. The lea… JEE Main 23rd Jan 2nd Shift 2026
• Two resistors 2 Ω and 3 Ω are connected in the gaps of bridge as shown in figure. The null point is obtained… JEE Main 24th Jan 1st Shift 2026
• In the potentiometer, when the cell in the secondary circuit is shunted with 4 Ω resistance, the balance is o… JEE Main 28th Jan 1st Shift 2026
• A Wheatstone bridge is initially at room temperature and all arms of the bridge have same value of resistance… JEE Main 28th Jan 2nd Shift 2026
• The value of unknown resistance (x) for which the potential difference between B and D will be zero in the ar… JEE Main 6th April 1st Shift 2024
• In a metre-bridge when a resistance in the left gap is 2 Ω and unknown resistance in the right gap, the balan… JEE Main 1st Feb 2nd Shift 2024
• To measure the temperature coefficient of resistivity α of a semiconductor, an electrical arrangement shown i… JEE Main 1st Feb 2nd Shift 2024
• A wire of length 10 cm and radius √7×10⁻⁴ m is connected across the right gap of a meter bridge. When a resis… JEE Main 27th Jan 1st Shift 2024
• The resistance per centimeter of a meter bridge wire is r, with X Ω resistance in left gap. Balancing length… JEE Main 31st Jan 2nd Shift 2024
• The current I in the given circuit will be [Figure: a 40 V source between nodes P (positive) and N (negative)… JEE Main 26th July 1st Shift 2022
• A battery of 6 V is connected to the circuit as shown below. The current I drawn from the battery is [Figure:… JEE Main 26th July 2nd Shift 2022
• The four arms of a Wheatstone bridge have resistances as shown in the figure. A galvanometer of 15 Ω resistan… JEE Main 17th March 2nd Shift 2021
• The value of current i₁ flowing from A to C in the circuit diagram is [Figure: an 8 V cell connected directly… JEE Main 4th Sept 2nd Shift 2020
• The resistance of the meter bridge AB in given figure is 4 Ω. With a cell of emf ε=0.5 V and rheostat resista… JEE Main 11th Jan 1st Shift 2019
• In a Wheatstone bridge (see figure), resistances P and Q are approximately equal. When R=400 Ω, the bridge is… JEE Main 11th Jan 1st Shift 2019
• In the experimental set up of metre bridge shown in the figure, the null point is obtained at a distance of 4… JEE Main 11th Jan 2nd Shift 2019
• In a meter bridge, the wire of length 1 m has a non-uniform cross-section such that the variation (dR)/(dl) o… JEE Main 12th Jan 1st Shift 2019
• On interchanging the resistances, the balance point of a meter bridge shifts to the left by 10 cm. The resist… JEE Main 2018
• In a meter bridge, as shown in the figure, it is given that resistance Y=12.5 Ω and that the balance is obtai… JEE Main Online 2018
• Which of the following statement is false? JEE Main 2017
• In a meter bridge experiment resistances are connected as shown in the figure. Initially resistance P=4 Ω and… JEE Main Online 2017
• Shown in the figure below is a meter-bridge set up with null deflection in the galvanometer. The value of the… JEE Main 2008
• In a Wheatstone's bridge, three resistances P, Q and R connected in the three arms and the fourth arm is form… JEE Main 2006
• The current I drawn from the 5 volt source will be [Figure: a 5 V source between node L (positive) and node R… JEE Main 2006
• In a metre bridge experiment null point is obtained at 20 cm from one end of the wire when resistance X is ba… JEE Main 2004
• In a meter bridge experiment to determine the value of unknown resistance, first the resistances 2 Ω and 3 Ω… JEE Main 24th Jan 2nd Shift 2026
• The value of current I in the electrical circuit as given below, when potential at A is equal to the potentia… JEE Main 28th Jan 2nd Shift 2025
• In a metre bridge experiment the balance point is obtained if the gaps are closed by 2 Ω and 3 Ω. A shunt of… JEE Main 29th Jan 1st Shift 2023
• When two resistances R₁ and R₂ connected in series and introduced into the left gap of a meter bridge and a r… JEE Main 29th Jan 2nd Shift 2023
• If the potential difference between B and D is zero, the value of x is 1/n Ω. The value of n is . [Figure: a… JEE Main 30th Jan 2nd Shift 2023
• Resistance are connected in a meter bridge circuit as shown in the figure. The balancing length l₁ is 40 cm.… JEE Main 26th July 1st Shift 2022
• In a meter bridge experiment, for measuring unknown resistance S, the null point is obtained at a distance 30… JEE Main 27th July 1st Shift 2022
• In the given figure of meter bridge experiment, the balancing length AC corresponding to null deflection of t… JEE Main 27th July 2nd Shift 2022
• A meter bridge setup is shown in the figure. It is used to determine an unknown resistance R using a given re… JEE Main 28th June 1st Shift 2022
• Current measured by the ammeter A in the reported circuit when no current flows through 10 Ω resistance, will… JEE Main 28th June 1st Shift 2022
• Consider a 72 cm long wire AB as shown in the figure. The galvanometer jockey is placed at P on AB at a dista… JEE Main 18th March 2nd Shift 2021
• Four resistances 40 Ω, 60 Ω, 90 Ω and 110 Ω make the arms of a quadrilateral ABCD. Across AC is a battery of… JEE Main 4th Sept 2nd Shift 2020
• Four resistances of 15 Ω, 12 Ω, 4 Ω and 10 Ω respectively in cyclic order to form Wheatstone's network. The r… JEE Main 8th Jan 1st Shift 2020
• In a meter bridge experiment, S is a standard resistance. R is a resistance wire. It is found that balancing… JEE Main 9th Jan 2nd Shift 2020