Circuit Theory & Kirchhoff’s Laws questions with solutions

Showing 1–10 of 45 questions

• Multi-correctmediumCurrent electricityCircuit Theory & Kirchhoff’s Laws

  Two ideal batteries of emf V₁ and V₂ and three resistances R₁, R₂ and R₃ are connected as shown in the figure. The current in resistance R₂ would be zero if

  

  Select all that apply

  • Option A

    V₁ = V₂ and R₁ = R₂ = R₃

  • Option B

    V₁ = V₂ and R₁ = 2R₂ = R₃

  • Option C

    V₁ = 2V₂ and 2R₁ = 2R₂ = R₃

  • Option D

    2V₁ = V₂ and 2R₁ = R₂ = R₃

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  JEE Advanced 2014

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• NumericmediumCurrent electricityCircuit Theory & Kirchhoff’s Laws

  The current flowing through the 1 Ω resistor is n/10 A. The value of n is ________.

  

  Your answer

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  JEE Mains 2024 09 Apr Morning Shift

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• MCQmediumCurrent electricityCircuit Theory & Kirchhoff’s Laws

  In the shown circuit, find the current in each 1 Ω resistance.

  

  Options

  • Option A

    0 A

  • Option B

    1 A

  • Option C

    0.25 A

  • Option D

    0.5 A

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  JEE Mains 2017

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• MCQmediumCurrent electricityCircuit Theory & Kirchhoff’s Laws

  In the circuit shown, what is the potential difference $V_{PQ}$ ?

  

  Options

  • Option A

    +3V

  • Option B

    +2V

  • Option C

    -2V

  • Option D

    None

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  JEE Mains

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• Multi-correctmediumCurrent electricityCircuit Theory & Kirchhoff’s Laws

  A semicircular metallic strip of thickness t and resistivity ρ has inner radius R₁ and outer radius R₂. A voltage V₀ is applied between its ends and current I flows. A transverse voltage ΔV develops between the inner and outer surfaces due only to the kinetic effect of the moving electrons. Ignore the magnetic field due to the current. Select the correct statements.

  

  Select all that apply

  • Option A

    I = [V₀t/(πρ)] ln(R₂/R₁)

  • Option B

    The outer surface is at a higher voltage than the inner surface.

  • Option C

    The outer surface is at a lower voltage than the inner surface.

  • Option D

    ΔV ∝ I²

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  JEE Advanced 2020

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• IntegermediumCurrent electricityCircuit Theory & Kirchhoff’s Laws

  Refer to the circuit diagram shown in the paper. The heat generated in the 6 Ω resistor during 100 s is α /100 J. Find the nearest integer value of α.

  

  Your answer

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  JEE Mains 2026 6 April Morning Shift

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• MCQdifficultCurrent electricityCircuit Theory & Kirchhoff’s Laws

  Find current through the cell and potential difference between A and D in the circuit shown in the Figure.

  

  Options

  • Option A

    I = E/R and V(A,D) = E/2

  • Option B

    I = E/(2R) and V(A,D) = E/2

  • Option C

    I = 2E/R and V(A,D) = E

  • Option D

    I = E/R and V(A,D) = 0

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  Current Electricity Objective Conversion

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• IntegermediumCurrent electricityCircuit Theory & Kirchhoff’s Laws

  In the circuit shown, the current through the 3 Ω resistor is x/3 A. Find x.

  

  Your answer

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  JEE Mains11 April 2023Shift 1Morning Shift

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• Multi-correctmediumCurrent electricityCircuit Theory & Kirchhoff’s Laws

  In the circuit shown, E, F, G and H are cells of emf 2 V, 1 V, 3 V and 1 V, with internal resistances 2 Ω, 1 Ω, 3 Ω and 1 Ω respectively. Select the correct statements.

  

  Select all that apply

  • Option A

    Potential at D - potential at B = -2/13 V

  • Option B

    Potential at D - potential at B = +2/13 V

  • Option C

    Potential at G = 21/13 V

  • Option D

    Potential at H = 19/13 V

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  JEE Advanced

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• MCQmediumCurrent electricityCircuit Theory & Kirchhoff’s Laws

  A battery of emf E and internal resistance r is connected across a resistance R. Resistance R can be adjusted to any value greater than or equal to zero. A graph is plotted between the current (i) passing through the resistance and potential difference (V) across it. Select the correct alternative.

  

  Options

  • Option A

    internal resistance of battery is 5Ω

  • Option B

    emf of the battery is 20V

  • Option C

    maximum current which can be taken from the battery is 4A

  • Option D

    V-i graph can never be a straight line as shown in figure

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  JEE MainsNEET

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