NEET Magnetism and Moving Charges questions
13 Physics questions on Magnetism and Moving Charges as asked in NEET, newest first.
- An electron (mass 9 × 10^-31 kg and charge 1.6 × 10^-19 C) moving with speed c/100 (c = speed of light) is injected into a magnetic field B of magnitude 9 × 10^-4 T perpendicular to its direction of motion. We wish to…
2025
- A 2 amp current is flowing through two different small circular copper coils having radii ratio 1 : 2. The ratio of their respective magnetic moments will be
2025
- A model for quantized motion of an electron in a uniform magnetic field B states that the flux passing through the orbit of the electron is n(h/e) where n is an integer, h is Planck's constant and e is the magnitude of…
2025
- Match List-I with List-II. List-I (Material): A. Diamagnetic B. Ferromagnetic C. Paramagnetic D. Non-magnetic List-II (Susceptibility (χ)): I. χ = 0 II. 0 > χ > -1 III. χ >> 1 IV. 0 < χ < ε (a small positive number)…
2024
- A sheet is placed on a horizontal surface in front of a strong magnetic pole. A force is needed to: A. hold the sheet there if it is magnetic. B. hold the sheet there if it is non-magnetic. C. move the sheet away from…
2024
- The net magnetic flux through any closed surface is
2023
- A wire carrying a current I along the positive x-axis has length L. It is kept in a magnetic field B = (2i + 3j - 4k) T. The magnitude of the magnetic force acting on the wire is
2023
- The dimensions [MLT^-2A^-2] belong to the
2022
- A long solenoid of radius 1 mm has 100 turns per mm. If 1 A current flows in the solenoid, the magnetic field strength at the centre of the solenoid is
2022
- Given below are two statements Statement I : Biot-Savart's law gives us the expression for the magnetic field strength of an infinitesimal current element (Idl) of a current carrying conductor only. Statement II :…
2022
- From Ampere's circuital law for a long straight wire of circular cross-section carrying a steady current, the variation of magnetic field in the inside and outside region of the wire is
2022
- An iron rod of susceptibility 599 is subjected to a magnetising field of 1200 A m–1. The permeability of the material of the rod is : (mu_0 = 4π × 10^-7 T m A^-1)
2020
- A long solenoid of 50 cm length having 100 turns carries a current of 2.5 A. The magnetic field at the centre of the solenoid is : (mu_0 = 4π × 10^-7 T m A^-1)
2020
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