Physics · 2023
JEE Main · 8 April 2023, Shift 1 · Q47
Certain galvanometers have a fixed core made of non magnetic metallic material. The function of this metallic material is
Certain galvanometers have a fixed core made of non magnetic metallic material. The function of this metallic material is
Official answer
From NTA’s final answer key for this paper.
(4)
to bring the coil to rest quickly
More from Electromagnetic Induction
- A square loop of side 10 cm and resistance 0.7 Ω is placed vertically in east-west plane. A uniform magnetic field of 0.20 T is set up across the…2024
- Regarding self-inductance: A. The self-inductance of the coil depends on its geometry. B. Self-inductance does not depend on the permeability of the…2025
- A circular current loop of radius R is placed inside square loop of side length L(L ≫ R) such that they are co-planar and their centers coincide. The…2026
- Three identical coils C_1, C_2 and C_3 are closely placed such that they share a common axis. C_2 is exactly midway. C_1 carries current I in…2026
- Find the mutual inductance in the arrangement, when a small circular loop of wire of radius ' R ' is placed inside a large square loop of wire of…2023
- When a coil is placed in a time dependent magnetic field the power dissipated in it is P. The number of turns, area of the coil and radius of the…2026
- A square loop of side 15 cm being moved towards right at a constant speed of 2 cm / s as shown in figure. The front edge enters the 50 cm wide…2024
- A 30 cm long solenoid has 10 turns per cm and area of 5 cm^2. The current through the solenoid coil varies from 2 A to 4 A in 3.14 s. The e.m.f.…2026
JEE Main 2023 Physics question, with the answer from NTA’s final answer key. Where our answers come from.