MCQEasyJEE Main 2025 · 7 April, Shift 2Electric Dipole

Physics Question from JEE Main 2025 · 7 April, Shift 2

A dipole with two electric charges of 2 μC2 \, \mu C magnitude each, with separation distance 0.5 μm0.5 \, \mu m, is placed between the plates of a capacitor such that its axis is parallel to an electric field established between the plates when a potential difference of 5 V5 \, V is applied. Separation between the plates is 0.5 mm0.5 \, mm. If the dipole is rotated by 30∘30^\circ from the axis, it tends to realign in the direction due to a torque. The value of torque is :

  • A

    5×10−9 Nm5 \times 10^{-9} \, Nm

  • B

    5×10−3 Nm5 \times 10^{-3} \, Nm

  • C

    2.5×10−12 Nm2.5 \times 10^{-12} \, Nm

  • D

    2.5×10−9 Nm2.5 \times 10^{-9} \, Nm

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