Student Login

Home›Chapters›Magnetic Properties of Materials PYQs›Hysteresis, Soft Iron vs Steel & Shielding›Question 9

JEE Main 2023 (8 Apr, Shift 2) · Hysteresis, Soft Iron vs Steel & Shielding

Hysteresis, Soft Iron vs Steel & Shielding question from JEE Main 2023 (8 Apr, Shift 2)

Q9JEE Main 2023 · 8 APR · SHIFT 2Easy

Hysteresis, Soft Iron vs Steel & Shielding

Given below are two statements: one is labelled as Assertion $\mathbf{A}$ and the other is labelled as Reason $\mathbf{R}$

Assertion A: Electromagnets are made of soft iron.

Reason R: Soft iron has high permeability and low retentivity.

In the light of above, statements, choose the most appropriate answer from the options given below.

Show answer and solution

Answer: (a)

A is true. Electromagnet cores are made of soft iron.
R is true. High permeability gives a strong field for a small current, and low retentivity means the core loses its magnetism when the current is switched off.
These are the reasons soft iron is used, so R explains A.
So the answer is (a).

Report a mistake

More questions on Hysteresis, Soft Iron vs Steel & Shielding

Magnetic shielding is done by surrounding the instrument to be protected from magnetic…MHT CET 2023 (13 May, Shift 2)
The soft-iron is a suitable material for making an electromagnet. This is because…JEE Main 2022 (24 Jun, Shift 2)
The figure gives experimentally measured B vs H variation in a ferromagnetic material…JEE Main 2020 (7 Jan, Shift 2)
Magnetic materials used for making permanent magnets (P) and magnets in a transformer (T)…JEE Main 2020 (2 Sep, Shift 1)
A bar magnet is demagnetized by inserting it inside a solenoid of length 0.2 m, 100…JEE Main 2019 (9 Jan, Shift 1)
The B-H curve for a ferromagnet is shown in the figure. The ferromagnet is placed inside…JEE Main 2018 (15 Apr, Shift 1)
Hysteresis loops for two magnetic materials A and B are given below: These materials are…JEE Main 2016
The coercivity of a small magnet where the ferromagnet gets demagnetized is 3 × 10³ Am⁻¹…JEE Main 2014