Magnetic Force on Current carrying conductor questions with solutions

Showing 1–10 of 26 questions

• MCQeasyMagnetic effect of currentMagnetic Force on Current carrying conductor

  A current carrying rectangular loop PQRS is made of uniform wire. The length PR = QS = 5 cm and PQ = RS = 100 cm. If ammeter current reading changes from I to 2I, the ratio of magnetic forces per unit length on wire PQ due to wire RS in the two cases respectively is:

  

  Options

  • Option A

    1 : 2

  • Option B

    1 : 4

  • Option C

    1 : 5

  • Option D

    1 : 3

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  JEE Mains30 January 2023Shift 2Evening Shift

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• Multi-correctmediumMagnetic effect of currentMagnetic Force on Current carrying conductor

  A closed current loop is placed completely in a uniform magnetic field. Which statements are correct?

  Select all that apply

  • Option A

    The net magnetic force on the loop is zero.

  • Option B

    The torque can be non-zero.

  • Option C

    Individual elements of the loop can experience non-zero forces.

  • Option D

    A non-zero torque requires a non-zero net force.

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• Multi-correctmediumMagnetic effect of currentMagnetic Force on Current carrying conductor

  A current-carrying straight conductor is placed in a uniform magnetic field. Which statements are correct?

  Select all that apply

  • Option A

    The force can be zero even when current is non-zero.

  • Option B

    The force magnitude is maximum when the conductor is perpendicular to B.

  • Option C

    The force direction follows I L×B.

  • Option D

    If the conductor is parallel to B, the magnetic force is zero.

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• MCQmediumMagnetic effect of currentMagnetic Force on Current carrying conductor

  A straight conductor of length L carries current I in a uniform magnetic field B. The conductor makes angle θ with B. What is the force magnitude?

  Options

  • Option A

    ILB sinθ

  • Option B

    ILB cosθ

  • Option C

    ILB

  • Option D

    IL/B

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• NumericmediumMagnetic effect of currentMagnetic Force on Current carrying conductor

  A 2A current carrying straight metal wire of resistance 1 Ω, resistivity 2 × 10⁻⁶ Ωm, area of cross-section 10 mm² and mass 500 g is suspended horizontally in mid air by applying a uniform magnetic field B. The magnitude of B is ______ × 10⁻¹ T (given, g = 10 m/s²)

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  JEE Mains 2024 05 Apr Morning Shift

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• NumericmediumMagnetic effect of currentMagnetic Force on Current carrying conductor

  Three infinitely long parallel wires lie at x=0, x=0.10 m and x=0.20 m. Their currents are respectively 2 A upward, 4 A upward and 6 A downward. Determine the magnitude of net force per unit length on the middle wire in μN/m.

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• MCQmediumMagnetic effect of currentMagnetic Force on Current carrying conductor

  A rigid wire consists of a semicircular portion of radius R and two straight sections. The wire is partially immersed in a perpendicular magnetic field $\vec{B}$= B₀ĵ as shown in the figure. The magnetic force on the wire if it has a current i is:

  

  Options

  • Option A

    -iBR ĵ

  • Option B

    2iBR ĵ

  • Option C

    iBR ĵ

  • Option D

    -2iBR ĵ

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  JEE Mains 2024 31 Jan Morning Shift

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• NumericmediumMagnetic effect of currentMagnetic Force on Current carrying conductor

  The magnetic field existing in a region is given by $\vec{B}$= 0.2(1 + 2x) k̂ T. A square loop of edge 50 cm carrying 0.5 A current is placed in x-y plane with its edges parallel to the x-y axes, as shown in figure. The magnitude of the net magnetic force experienced by the loop is ______ mN.

  

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  JEE Mains 2024 04 Apr Morning Shift

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• NumericeasyMagnetic effect of currentMagnetic Force on Current carrying conductor

  The horizontal component of earth’s magnetic field at a place is 3.5 × 10⁻⁵ T. A very long straight conductor carrying current of √2 A in the direction from South east to North West is placed. The force per unit length experienced by the conductor is ……… × 10⁻⁶ N/m.

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  JEE Mains 2024 30 Jan Morning Shift

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• MCQmediumMagnetic effect of currentMagnetic Force on Current carrying conductor

  Three long straight wires carrying current are arranged mutually parallel as shown in the figure. The force experienced by 15 cm length of wire Q is _____.

  (μ₀ = 4π × 10⁻⁷ T·m/A)

  

  Options

  • Option A

    6 × 10⁻⁷ N towards P

  • Option B

    6 × 10⁻⁶ N towards R

  • Option C

    6 × 10⁻⁷ N towards R

  • Option D

    6 × 10⁻⁶ N towards P

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  JEE Mains 202628 January Morning Shift

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