If the B-H curves of two samples P and Q of i | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(B) The $B-H$ curve (hysteresis loop) provides information about the magnetic properties of a material.$1$. Permanent magnets require materials with h

Vedclass · Accepted Answer

$P$ is suitable for making permanent magnet and $Q$ for making electromagnet

Vedclass · Answer

(B) The $B-H$ curve (hysteresis loop) provides information about the magnetic properties of a material.$1$. Permanent magnets require materials with high retentivity and high coercivity so that they do not lose their magnetism easily. $A$ larger hysteresis loop area indicates higher coercivity.$2$. Electromagnets require materials with high permeability,low retentivity,and low coercivity so that they can be easily magnetized and demagnetized. $A$ smaller hysteresis loop area indicates lower coercivity.$3$. From the given graphs,sample $P$ has a larger hysteresis loop area (higher coercivity),making it suitable for permanent magnets.$4$. Sample $Q$ has a smaller hysteresis loop area (lower coercivity),making it suitable for electromagnets.Therefore,$P$ is suitable for a permanent magnet and $Q$ is suitable for an electromagnet.

If the $B-H$ curves of two samples $P$ and $Q$ of iron are as shown below,then which one of the following statements is correct?

Similar Questions

The energy dissipated per unit volume per cycle in the hysteresis of an iron sample of mass $10 \, kg$ is $200 \, J \, m^{-3} \, cycle^{-1}$. The density of iron is $7500 \, kg \, m^{-3}$. The loss of energy per hour at $50 \, cycle \, s^{-1}$ is: (in $J$)

The study of the hysteresis curve for a given material is used to estimate the:

Magnetic hysteresis is exhibited by . . . . . . magnetic materials.

The only property possessed by ferromagnetic substances is

Vedclass Test Series

Exam Paper Generator

Online Exam Module