Physics · 2018
NEET 2018 · 6 May · Code AA · Q27
A thin diamagnetic rod is placed vertically between the poles of an electromagnet. When the current in the electromagnet is switched on, then the…
A thin diamagnetic rod is placed vertically between the poles of an electromagnet. When the current in the electromagnet is switched on, then the diamagnetic rod is pushed up, out of the horizontal magnetic field. Hence the rod gains gravitational potential energy. The work required to do this comes from
Official answer
From NTA’s final answer key for this paper.
(3)
the current source
More from Electromagnetic Induction
- Consider a long solenoid of length l and radius r. If n is the number of turns per unit length and μ_0 is the permeability of free space, the…2026
- A square loop of side 1 m and resistance 1 Ω is placed in a magnetic field of 0.5 T. If the plane of loop is perpendicular to the direction of…2022
- Two conducting circular loops of radii R_1 and R_2 are placed in the same plane with their centres coinciding. If R_1 ≫ R_2, the mutual inductance M…2021
- A rectangular wire loop of sides 8 cm and 3 cm with a small cut, is moving out of a region of uniform magnetic field of magnitude 0.3 T directed…2026
- 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.…2024
- AB is a part of an electrical circuit (see figure). The potential difference " V_A-V_B ", at the instant when current i=2 A and is increasing at a…2025
- The magnetic energy stored in an inductor of inductance 4 μ H carrying a current of 2 A is:2023
- A conducting loop of finite resistance lies on the x-y plane. There is a constant magnetic field in the z direction. The area of the loop varies with…2026
NEET (UG) 2018 Physics question, with the answer from NTA’s final answer key. Where our answers come from.