jee_main_2026_28_january_morning - Current Electricity Topics

Master these core formulas and structures to solve almost any past paper question.

Sample Questions in this Chapter

QUESTION #28 Potentiometer
In the potentiometer, when the cell in the secondary circuit is shunted with 4 \,Omega resistance, the balance is obtained at the length 120 cm of wire. Now when the same cell in shunted with 12 \,Omega resistance, the balance is shifted to a length of 180 cm. The internal resistance of cell is ____ Omega.
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QUESTION #38 Combination of Cells
For the two cells having same EMF E and internal resistance r, the current passing through the external resistor 6 \,Omega is same when both the cells are connected either in parallel or in series. The value of internal resistance r is ____ Omega.
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QUESTION #50 Kirchhoff's Laws
The equivalent resistance between the points A and B in the following circuit is fracx5Omega . The value of x is {{IMG1}}
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JEE Physics: Waves (+15.5%) | Electrostatics: Concentric Shells (-29.7%) | Modern Physics: Photoelectric Clones (+34.2%) | Mathematics: Definite Integrals (+18.1%) | Chemistry: Coordination Splitting (-11.4%) | JEE Physics: Waves (+15.5%) | Electrostatics: Concentric Shells (-29.7%) | Modern Physics: Photoelectric Clones (+34.2%) | Mathematics: Definite Integrals (+18.1%) | Chemistry: Coordination Splitting (-11.4%)
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