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Day 338: JEE Mains Physics

5 questions. Try each one first, then open its answer.

  1. Question 1

    Moving Charges and Magnetism. Asked once: 29 Jul 2022 (same type asked 6 times) See all 6 of this type

    96
    A wire XX of length 50 cm50\text{ }cm carrying a current of 2 A2\text{ }A is placed parallel to a long wire YY. The wire YY carries a current of 3 A3\text{ }A. The distance between two wires is 5 cm5\text{ }cm and currents flow in the same direction. The force acting on the wire YY is:

    Tap an option to check your answer.

  2. Question 2

    System of Particles and Rotational Motion. Asked once: 6 Apr 2023 (same type asked 6 times) See all 6 of this type

    114
    A ring and a solid sphere rotating about an axis passing through their centers have same radii of gyration. The axis of rotation is perpendicular to plane of ring. The ratio of radius of ring to that of sphere is 2x\sqrt{\frac{2}{x}}. The value of xx is___

  3. Question 3

    Current Electricity. Asked once: 29 Jan 2023 (same type asked 6 times) See all 6 of this type

    115
    When two resistances R1R_{1} and R2R_{2} connected in series and introduced into the left gap of a meter bridge and a resistance of 10Ω10\Omega is introduced into the right gap, a null point is found at 60 cm60\text{ }cm from left side. When R1R_{1} and R2R_{2} are connected in parallel and introduced into the left gap, a resistance of 3Ω3\Omega is introduced into the right-gap to get null point at 40 cm40\text{ }cm from left end. The product of R1R2R_{1}R_{2} is___ Ω2\Omega^{2}

  4. Question 4

    Moving Charges and Magnetism. Asked once: 5 Apr 2024 (same type asked 6 times) See all 6 of this type

    94
    A galvanometer of resistance 100Ω100\Omega when connected in series with 400Ω400\Omega measures a voltage of upto 10 V10\text{ }V. The value of resistance required to convert the galvanometer into ammeter to read upto 10 A10\text{ }A is x×10−2Ωx \times10^{- 2}\Omega. The value of xx is:

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  5. Question 5

    Moving Charges and Magnetism. Asked once: 30 Jan 2024 (same type asked 6 times) See all 6 of this type

    116
    A current of 5 A5\text{ }A flows in a square loop of side 1 m1\text{ }m placed in air. The magnetic field at the centre of the loop is X2×10−7 TX\sqrt{2} \times 10^{-7}\text{ }T. The value of XX is