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Cells, EMF and Internal Resistance for JEE: 32 solved questions

Real JEE paper questions on cells, emf and internal resistance, part of current electricity. Each opens with the options, the correct answer and a step-by-step solution. Papers run from 2005 to 2026. No sign-in needed to read them.

What this topic asks

• Combination of cells — 23 questions
• Terminal voltage and internal resistance — 9 questions

All 32 questions with solutions

• The voltage and the current between A and B points shown in the circuit are . [Figure: a left vertical rail a… JEE Main 4th April 1st Shift 2026
• Two identical cells each of emf 1.5 V are connected in parallel across a parallel combination of two resistor… JEE Main 24th June 1st Shift 2022
• Refer to the figure given below, current between terminals A and B is A. [Figure: four parallel rows between… JEE Main 5th April 1st Shift 2026
• For the two cells having same EMF E and internal resistance r, the current passing through the external resis… JEE Main 28th Jan 1st Shift 2026
• Given below are two statements: Statement-I: The equivalent emf of two non-ideal batteries connected in paral… JEE Main 22nd Jan 1st Shift 2025
• In the given circuit, the terminal potential difference of the cell is [Figure: a cell of emf 3 V with intern… JEE Main 8th April 1st Shift 2024
• The reading in the ideal voltmeter (V) shown in the given circuit diagram is [Figure: a single closed loop of… JEE Main 1st Feb 1st Shift 2024
• Two sources of equal emfs are connected in series. This combination is connected to an external resistance R.… JEE Main 27th July 1st Shift 2022
• Two cells of same emf but different internal resistances r₁ and r₂ are connected in series with a resistance… JEE Main 25th June 2nd Shift 2022
• The combination of two identical cells, whether connected in series or parallel combination provides the same… JEE Main 29th June 2nd Shift 2022
• Five identical cells each of internal resistance 1 Ω and emf 5 V are connected in series and in parallel with… JEE Main 27th Aug 1st Shift 2021
• A cell E₁ of emf 6 V and internal resistance 2 Ω is connected with another cell E₂ of emf 4 V and internal re… JEE Main 24th Feb 1st Shift 2021
• In the given circuit, an ideal voltmeter connected across the 10 Ω resistance reads 2 V. The internal resista… JEE Main 10th April 1st Shift 2019
• In the circuit shown, the potential difference between A and B is [Figure: A connects through 5 Ω to node D.… JEE Main 11th Jan 2nd Shift 2019
• Two batteries with e.m.f. 12 V and 13 V are connected in parallel across a load resistor of 10 Ω. The interna… JEE Main 2018
• A 10 V battery with internal resistance 1 Ω and a 15 V battery with internal resistance 0.6 Ω are connected i… JEE Main Online 2015
• A 5 V battery with internal resistance 2 Ω and 2 V battery with internal resistance 1 Ω are connected to a 10… JEE Main 2008
• Two sources of equal emf are connected to an external resistance R. The internal resistances of the two sourc… JEE Main 2005
• An energy source will supply a constant current into the load if its internal resistance is JEE Main 2005
• When an external resistance of 5 Ω is connected across terminals of a cell, a current of 0.25 A flows through… JEE Main 5th April 2nd Shift 2026
• Two cells of emfs 1 V and 2 V and internal resistance 2 Ω and 1 Ω, respectively connected in parallel, gave a… JEE Main 6th April 2nd Shift 2026
• Two cells of emfs 1 V and 2 V and internal resistances 2 Ω and 1 Ω, respectively, are connected in series wit… JEE Main 3rd April 2nd Shift 2025
• Two cells are connected in opposition as shown. Cell E₁ is of 8 V emf and 2 Ω internal resistance, the cell E… JEE Main 30th Jan 1st Shift 2024
• In the circuit diagram shown in figure given below, the current flowing through resistance 3 Ω is x/3 A. The… JEE Main 11th April 1st Shift 2023
• Two identical cells each of emf 1.5 V are connected in series across a 10 Ω resistance. An ideal voltmeter co… JEE Main 11th April 2nd Shift 2023
• Two cells are connected between points A and B as shown. Cell 1 has emf of 12 V and internal resistance of 3… JEE Main 25th Jan 2nd Shift 2023
• Two identical cells, when connected either in parallel or in series gives same current in an external resista… JEE Main 31st Jan 1st Shift 2023
• In the given figure, the value of V₀ will be V. [Figure: three branches in parallel between a grounded left w… JEE Main 25th July 1st Shift 2022
• First, a set of n equal resistor of 10 Ω each are connected in series to a battery of emf 20 V and internal r… JEE Main 27th Aug 1st Shift 2021
• In an electric circuit, a cell of certain emf provides a potential difference of 1.25 V across a load resista… JEE Main 22nd July 2nd Shift 2021
• The series combination of two batteries, both of the same emf 10 V, but different internal resistance of 20 Ω… JEE Main 8th Jan 2nd Shift 2020
• A battery of 3.0 V is connected to a resistor dissipating 0.5 W of power. If the terminal voltage of the batt… JEE Main 4th Sept 1st Shift 2020