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JEE Main 20202 SeptemberMorning Shift
Exam
JEE Main
Year
2020
Date
2 September
Shift
Morning Shift
Subject
Physics
Chapter
Alternating Current

JEE Main 2020 · 2 September · Morning Shift · Physics · Alternating Current

Magnetic materials used for making permanent magnets (P) and...

Magnetic materials used for making permanent magnets (P)\left(P\right) and magnets in a transformer (T)\left(T\right) have different properties of the following, which property best matches for the type of magnet required?

Options

  1. AT:T: Large retentivity, small coercivity
  2. BP:P: small retentivity, large coercivity
  3. CT:T: Large retentivity, large coercivity
  4. DP:P: large retentivity, large coercivity

Correct answer

D. P:P: large retentivity, large coercivity

Step-by-step solution

As per the properties of Magnetic substances, materials favorable for permanent magnets should have high retentivity, large coercivity and high permeability.

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