PrepWiser › Learn › Physics › Current ElectricityCurrent Electricity — JEE Main PYQs & Practice Questions Current Electricity is a Physics chapter in the JEE Main syllabus. This page brings together 252 previous-year and practice questions on Current Electricity, organised into 7 topics: Ohm's Law and Resistance, Kirchhoff's Laws, EMF and Internal Resistance, Drift Velocity and Mobility, Wheatstone and Metre Bridge, Potentiometer and Electrical Power and Heating. Most questions come with a step-by-step solution you can work through free in PrepWiser.
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Ohm's Law and Resistance Kirchhoff's Laws EMF and Internal Resistance The terminal voltage of a battery is always less than or equal to its EMF when it… Two cells of emfs 1 V and 2 V and internal resistances 2 Ω and 1 Ω, respectively, are… Three voltmeters, all having different internal resistances are joined as shown in… A battery of 3.0 V is connected to a resistor dissipating 0.5 W of power. If the… Model a torch battery of length l to be made up of a thin cylindrical bar of radius ‘a’… The combination of two identical cells, whether connected in series or parallel… A cell E₁ of emf 6V and internal resistance 2Ω is connected with another cell E₂ of emf… Two cells are connected between points A and B as shown. Cell 1 has emf of 12 V and… A cell of EMF 6 V and internal resistance 1 Ω is connected to an external resistor of 2… Given below are two statements : Statement-I : The equivalent emf of two nonideal… In the given figure, the emf of the cell is 2.2 V and if internal resistance is 0.6Ω… Two cells of emf 2E and E with internal resistance r₁ and r₂ respectively are connected… Two cells of same emf but different internal resistances r₁ and r₂ are connected in… In the figure, potential difference between A and B is : Two identical cells, when connected either in parallel or in series gives same current… In an electrical circuit, a battery is connected to pass 20C of charge through it in a… Two identical cells each of emf 1.5 V are connected in parallel across a parallel… In the following circuit, the battery has an emf of 2 V and an internal resistance of… In the given circuit, the terminal potential difference of the cell is : Two identical cells each of emf 1.5 V are connected in series across a 10 Ω resistance… Drift Velocity and Mobility Wheatstone and Metre Bridge Four resistances of 15Ω, 12Ω, 4Ω and 10Ω respectively in cyclic order to form… In a metre-bridge when a resistance in the left gap is 2 Ω and unknown resistance in the… The value of unknown resistance (x) for which the potential difference between B and D… Two resistors 2Ω and 3Ω are connected in the gaps of bridge as shown in figure. The null… Resistances are connected in a meter bridge circuit as shown in the figure. The… To measure the temperature coefficient of resistivity α of a semiconductor, an… The value of net resistance of the network as shown in the given figure is : A Wheatstone bridge is balanced when P/Q = R/S. In the balanced state, the current… A wire of length 10 cm and radius √7 × 10⁻⁴ m connected across the right gap of a meter… Wheatstone bridge principle is used to measure the specific resistance (S₁) of given… In a meter bridge experiment to determine the value of unknown resistance, first the… The resistance per centimeter of a meter bridge wire is r, with X Ω resistance in left… A Wheatstone bridge is initially at room temperature and all arms of the bridge have… A meter bridge setup is shown in the figure. It is used to determine an unknown… In a meter bridge experiment, for measuring unknown resistance 'S', the null point is… In a balanced Wheatstone bridge with arms 4 Ω, 6 Ω, 10 Ω and S, the value of S (in Ω) is: Four resistances 40 Ω, 60 Ω, 90 Ω and 110 Ω make the arms of a quadrilateral ABCD… In a metre bridge experiment the balance point is obtained if the gaps are closed by 2Ω… If the potential difference between B and D is zero, the value of x is 1/n Ω. The value… A meter bridge with two resistances R₁ and R₂ as shown in figure was balanced (null… Potentiometer A null point is found at 200 cm in potentiometer when cell in secondary circuit is… In the given figure, there is a circuit of potentiometer of length AB = 10 m. The… The given potentiometer has its wire of resistance 10Ω. When the sliding contact is in… In the potentiometer, when the cell in the secondary circuit is shunted with 4Ω… A potential divider circuit is shown in figure. The output voltage V₀ is : A potentiometer wire PQ of 1 m length is connected to a standard cell E₁. Another cell… In an experiment to find emf of a cell using potentiometer, the length of null point for… The balancing length for a cell is 560 cm in a potentiometer experiment. When an… In the given circuit, the voltage across load resistance (R_L) is : The circuit diagram of potentiometer used to measure the internal resistance of a cell… In a potentiometer arrangement, a cell of emf 1.20 V gives a balance point at 36 cm… As shown in the figure, a potentiometer wire of resistance 20 Ω and length 300 cm is… The total length of potentiometer wire AB is 50 cm in the arrangement as shown in the… A potentiometer wire of length 300 cm is connected in series with a resistance 780 Ω and… In the given potentiometer circuit arrangement, the balancing length AC is measured to… In a potentiometer arrangement, a cell gives a balancing point at 75 cm length of wire… A potentiometer wire of length 10 m and resistance 20 Ω is connected in series with a 25… To measure the internal resistance of a battery, potentiometer is used. For R=10 Ω, the… In the given circuit of potentiometer, the potential difference E across AB (10 m… A cell, shunted by a 8 Ω resistance, is balanced across a potentiometer wire of length 3… Electrical Power and Heating More Physics chapters Frequently asked questions How many Current Electricity questions are there for JEE Main? PrepWiser has 252 Current Electricity questions for JEE Main, grouped into 7 topics such as Ohm's Law and Resistance, Kirchhoff's Laws and EMF and Internal Resistance.
Are these Current Electricity questions from previous-year JEE Main papers? Yes — most are genuine previous-year questions from past JEE Main papers, and the rest are practice questions written to match the JEE Main pattern and difficulty.
Where can I see the answers and solutions to these Current Electricity questions? Open any Current Electricity question in PrepWiser (it is free) to attempt it; most come with a step-by-step solution.