Current electricity questions with solutions

Showing 1–10 of 345 questions

• MCQeasyCurrent electricityCells, Maximum Power & Heating Effect

  Two identical heater filaments are connected first in parallel and then in series. At the same applied voltage, the ratio of heat produced in the same time, parallel : series, is:

  Options

  • Option A

    1 : 2

  • Option B

    4 : 1

  • Option C

    1 : 4

  • Option D

    2 : 1

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  JEE Mains11 April 2023Shift 1Morning Shift

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• MCQeasyCurrent electricityCircuit Theory & Kirchhoff’s Laws

  Kirchhoff’s first and second laws of electrical circuits are consequences of:

  Options

  • Option A

    conservation of energy and electric charge respectively

  • Option B

    conservation of energy

  • Option C

    conservation of electric charge and energy respectively

  • Option D

    conservation of electric charge

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  AIPMT 2006NEET Previous Year

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• MCQeasyCurrent electricityElectric Current, Drift Velocity & Resistance

  Specific resistance of a conductor increases with:

  Options

  • Option A

    increase in temperature

  • Option B

    increase in the cross-section area

  • Option C

    increase in cross-section and decrease in length

  • Option D

    decrease in the cross-section area

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  AIPMT 2002NEET Previous Year

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• NumericmediumCurrent electricityEquivalent Resistance & Networks

  The equivalent resistance between the points A and B in the following circuit is x/5 Ω. The value of x is ________.

  

  Your answer

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  JEE Mains 202628 January Morning Shift

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• IntegereasyCurrent electricityEquivalent Resistance & Networks

  A wire of total resistance 9 Ω is bent into an equilateral triangle. The equivalent resistance between any two vertices is:

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  JEE Mains 2025 24 Jan Morning Shift

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• MCQmediumCurrent electricityCircuit Theory & Kirchhoff’s Laws

  Three resistors having resistances r₁, r₂ and r₃ are connected as shown: r₁ in series with r₂ and r₃ in parallel. The ratio i₃/i₁ is:

  

  Options

  • Option A

    r₁/(r₂+r₃)

  • Option B

    r₂/(r₂+r₃)

  • Option C

    r₁/(r₁+r₂)

  • Option D

    r₂/(r₁+r₃)

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  NEET 2021NEET Previous Year

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• MCQmediumCurrent electricityCircuit Theory & Kirchhoff’s Laws

  When a current of 4 A flows within a battery from its positive to negative terminal, the potential difference across the battery is 12 volts. The potential difference across the battery is 9 volts when a current of 2 A flows within it from its negative to its positive terminal. The internal resistance and the e.m.f. of the battery are:-

  Options

  • Option A

    0.1 Ω, 4V

  • Option B

    0.2 Ω, 5V

  • Option C

    0.5 Ω, 10V

  • Option D

    0.7 Ω, 10V

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• NumericmediumCurrent electricityCircuit Theory & Kirchhoff’s Laws

  In the circuit shown in figure potential difference between point A and B is 16V. Find the current passing through 2Ω resistance.

  

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  JEE Advanced

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• Multi-correctmediumCurrent electricityCells, Maximum Power & Heating Effect

  Figure shows the net power dissipated in R versus the current in a simple circuit shown.

  

  Select all that apply

  • Option A

    Internal resistance of the battery is 0.2 Ω

  • Option B

    Emf of the battery is 2 V

  • Option C

    R for which power is 5 W is 2.5 Ω

  • Option D

    At i = 2 A, power is 3.2 W

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• MCQmediumCurrent electricityElectrical Instruments: Galvanometer, Ammeter, Voltmeter & Potentiometer

  The metre bridge is balanced when P/Q = l₁/l₂. If positions of galvanometer and cell are interchanged, does bridge work and what is balance condition?

  

  Options

  • Option A

    yes, P/Q = (l₂-l₁)/(l₂+l₁)

  • Option B

    no null point

  • Option C

    yes, P/Q = l₂/l₁

  • Option D

    yes, P/Q = l₁/l₂

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  NEET Odisha 2019NEET Previous Year

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