Question:
The material of permanent magnet has
The material of permanent magnet has
Show Hint
Permanent magnets retain their magnetization due to high retentivity and high coercivity, making them useful in various applications.
Updated On: Jan 15, 2026
- Low retentivity, high coercivity
- High retentivity, low coercivity
- Low retentivity, low coercivity
- High retentivity, high coercivity
Hide Solution
Verified By Collegedunia
The Correct Option is D
Solution and Explanation
Permanent magnets have high retentivity and high coercivity, meaning they retain their magnetization even when the external magnetic field is removed and require a strong external field to demagnetize them.
Was this answer helpful?
0
0
Top Questions on Magnetic Materials
Consider a cross-section of an electromagnet having an air-gap of 5 cm as shown in the figure. It consists of a magnetic material \( \mu = 20000 \mu_0 \) and is driven by a coil having \( NI = 10^4 \), where \( N \) is the number of turns and \( I \) is the current in Ampere.
Ignoring the fringe fields, the magnitude of the magnetic field \( \vec{B} \) (in Tesla, rounded off to two decimal places) in the air-gap between the magnetic poles is \(\underline{\hspace{2cm}}\).
- GATE PH - 2021
- Electromagnetic Theory
- Magnetic Materials
- A material is placed in a magnetic field intensity \(H\). As a result, bound current density \(J_b\) is induced and magnetization of the material is \(M\). The magnetic flux density is \(B\). Choose the correct option(s) valid at the surface of the material.
- GATE PH - 2021
- Electromagnetic Theory
- Magnetic Materials
Questions Asked in JEECUP exam
- What is the IUPAC name of the compound CH₃-CH₂-CO-CH₃?
- JEECUP - 2025
- Nomenclature Of Organic Compounds
- A bag contains 4 red and 6 blue balls. Two balls are drawn at random without replacement. What is the probability that both are red?
- JEECUP - 2025
- Probability
- A point P divides the line segment joining A(2, 3) and B(8, 9) in the ratio 1:2. What are the coordinates of P?
- JEECUP - 2025
- Coordinate Geometry
- If sin θ + cos θ = √2, what is the value of sin θ · cos θ?
- JEECUP - 2025
- Trigonometric Identities
- The roots of the quadratic equation x² - 5x + k = 0 are real and distinct. What is the range of values for k?
- JEECUP - 2025
- Quadratic Equations
View More Questions