# Magnetic materials used for making permanent magnets (P) and magnets in a transformer (T) have different properties of the following,

Question:

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

1. (1) $\mathrm{T}$ : Large retentivity, small coercivity

2. (2) $\mathrm{P}$ : Small retentivity, large coercivity

3. (3) $T$ : Large retentivity, large coercivity

4. (4) P : Large retentivity, large coercivity

Correct Option: , 4

Solution:

(4) Permanent magnets $(P)$ are made of materials with large retentivity and large coercivity. Transformer cores $(T)$ are made of materials with low retentivity and low coercivity.